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Android · offline na pangongolekta ng data · bersyon 1.5.2
Isang teleponong gumagana
bilang tunay na instrumento.
Tuloy-tuloy na itinatala ng Signal Collector ang data ng sensor, radyo at network na kayang abutin ng telepono mo, diretso sa telepono — walang cloud storage, walang nasukat na data na umaalis sa device.
Tunay na kuha · Pixel 10a
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Isang tumatakbong pagsukat. Ipinapakita ng singsing ang mga satellite, network at sensor habang dumarating ang mga ito.
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Pagpili ng susukatin. Bawat pinagkukunan ay isang row na nagsasabi kung ano ang itinatala nito.
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Simulan, i-reset at ihinto, kasama sa itaas nila ang tagal, distansya at bilang ng record.
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Ang ibaba ng panel: kung ano ang ginagawa ng bawat pinagkukunan at ang file na umaalis sa telepono.
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Mga setting: paghahatid sa sarili mong server, mga yunit, at kung ano ang mangyayari pagkatapos ihinto.
Internal test
Ang susunod na bersyon, bago pa ito mapunta sa Store.
Bawat build ay dumadaan sa internal test bago mapunta sa produksyon. Sumali gamit ang Google account na naka-sign in sa telepono at darating ang update gaya ng iba pa.
Saklaw ng MVP
Isang takbo.
Ang buong konteksto.
- 01GPS, GNSS at mga sensor ng device
- 02Mga cellular network: LTE / 5G / 3G / 2G
- 03Wi‑Fi, Bluetooth at konteksto ng network
- 04Tuloy-tuloy na mapping ng internet sa Wi‑Fi at cellular
Para saan ito
Bawat kaso ay nagtatapos
sa isang file.
Ang isang instrumentong pansukat ay hindi ibinebenta sa listahan ng mga pinagkukunan nito kundi sa tanong na sinasagot nito. Anim sa labindalawang sitwasyong pinaggawan ng app — bawat isa ay isang lakad, at isang file sa dulo nito.
Ang patay na lugar sa meeting room
Lakarin ang palapag na nasa bulsa ang telepono at magsabi ng nota sa bawat pinto. Lalabas ang throughput bawat segundo, ang AP na talagang kinakabitan ng telepono, at isang silid sa halip na pagtatalo sa pagitan ng dalawang departamento.
Isang drive test nang walang van
Parehong SIM ang nag-i-scan, GPS bawat isang segundo, naka-lock ang telepono sa dashboard. Bawat pagbabago ng teknolohiya, Cell ID o PCI ay napupunta bilang event, kaya lumalabas ang mga handover na natukoy hanggang sa metro.
Isang survey kung saan walang naibibigay ang GPS
Sa bodega, bubong ang langit. Markahan ang bawat pasilyo ng larawan mula sa sariling viewfinder ng app at kolektahin ang mga AP, MLO link at RTT na distansya — isang mapa ng saklaw bago pa mabili ang unang bagong AP.
Mga sensor na kusang nag-uulat
Dose-dosenang BLE na termometro sa paligid ng gusali, wala ni isang naka-pair. Dumaan lang at darating ang temperatura, halumigmig at boltahe ng baterya nila nang may pangalan at nasa mga yunit ng SI, katabi ng mga byte na pinagmulan nila.
Patunay para sa may-ari ng gusali
Sampung minutong paglalakad ang nagbibigay ng file na may timestamp, posisyon, lakas ng signal at mga larawan ng mga silid. Ang “maganda naman ang signal kahit saan” ay nagiging isang pahayag na kayang suriin.
Isang kliyenteng ayaw ng cloud
Sumukat gaya ng dati at ihatid sa sarili mong S3, WebDAV o SFTP — o mag-abot na lang ng file. Hindi kailanman dumadaan sa gallery ng telepono ang mga larawan at voice note, kaya nananatiling mapipirmahan ang NDA.
Lahat ng labindalawang kaso, at kung ano ang bumabasa ng data
Trabahong kaya mong
panoorin.
Dala ng bersyon 1.5.1 ang lahat ng labindalawang wika sa bawat install, ipinapakita nito ang mahabang export o Reset habang ginagawa, at nagdadagdag ito ng malayang kuwaderno para sa mga punto, larawan at pagsubok na kinuha nang walang tumatakbong pagsukat.
Mga wikang talagang naroon
Dati, ang mga wikang nasa telepono noong i-install lang ang inihahatid ng Google Play, kaya ang pagpili ng wika bawat app ay nag-aalok ng Czech at ng iba pa nang walang string sa likod nila. Kasama na ngayon ang lahat ng labindalawang salin sa bawat install.
Isang kometa sa key
Ang Download, Share at Reset ay umaabot ng segundo hanggang minuto sa malaking pagsukat. May kometa na ngayong tumatakbo sa gilid ng key, lumalaki ang buntot kasabay ng natapos na bahagi, at may buhay na linya sa ilalim nito na nagsasabi kung gaano na katapos, gaano na katagal itong tumatakbo at humigit-kumulang gaano pa ang natitira. Ipinapakita ang libreng espasyo bago magsimula ang pagsulat — amber kapag kakaunti na, pula kapag hindi kakasya ang export.
Isang malayang kuwaderno
Hindi na kailangan ng Simulan para sa mga survey point, larawan, voice note, minsanang pagsubok sa internet at isang cycle ng Wi-Fi throughput. Kapag walang tumatakbong pagsukat, napupunta sila sa hiwalay na talaan nang walang collector, walang wake lock at walang bawas sa libreng oras — may sarili itong card, sariling Share na file at sariling Clear.
Share mula sa icon, mga kontrol ng sistema
Pindutin nang matagal ang icon ng app kapag huminto na ang pagsukat at nariyan ang Share sa tabi ng Simulan; binubuksan nito ang app at agad na sinisimulan ang export. Ang mga switch, text field, pagpipilian at mensahe ay karaniwang kontrol na ngayon ng Android — nananatili ang mga key at ang instrumento gaya ng dati.
Nothing lost
on the way out.
Version 1.5.0 adds no new key. It goes over everything that could cost a measurement its data — a Reset under a stray thumb, a point number used twice, an export torn in half by a second export — and closes each one, with a test that keeps it closed.
A Reset that asks first
The first touch on Reset deletes nothing. It opens a dialog that names what would go: the measurements, the photos and the voice notes. Cancel keeps everything; only a confirmation wipes. A thumb that brushes the key in a corridor no longer ends a day's work.
Points keep their numbers
Stop a measurement, start it again, mark a point: it gets the next number, not a repeat of one already in the file. The same holds for photo and voice marks, so two records never share one point index and the export stays unambiguous.
An export in one piece
Export takes a single atomic snapshot of the database, and two export requests at once queue instead of tearing one archive. The manifest is computed from the bytes that actually went into the archive, with a SHA-256 for every file. You get a readable archive or a plain error — never a silent torso.
Failures that stay failures
When the writer loses a batch, Stop cannot turn the run into a success. Encrypted Eddystone telemetry stops showing up as plausible plain numbers. Dual-SIM attribution, WPA3-only networks, probe time budgets and the microphone handoff are hardened, and the expandable cards tell TalkBack what they are.
Started without
opening it.
Version 1.4.0 puts Start and Stop where the hand already is — the quick settings shade and the app icon — and lets a marked point carry a photo and a voice, so what a corridor looked like leaves together with the numbers.
A tile in the shade
Start and Stop in the quick settings shade, within reach from any app and over the lock screen, where a widget cannot go. Over a secured lock it unlocks first — what it starts is location with a microphone. It measures with whatever the app measured with last, so one key never starts two different measurements.
Shortcuts under the icon
A long press on the app icon is the only control that is always on the home screen, so it offers the one thing that makes sense now: Start while nothing runs, Stop and Mark point once it does. The gate the launcher walks through is locked with a token no other app can read.
A photo and a voice at the point
A marked point can carry a photo taken through the app's own viewfinder, or a spoken note of up to ten minutes. The media never touch the phone gallery: they sit in the app's private storage and leave only through an export, which becomes a single tar.gz with a SHA-256 for every file.
Settings you can take with you
A new phone set up like the old one, without walking through two dozen sources by hand. Passwords go into the backup only if you ask, and only after a fingerprint, a face or the screen lock. The licence and the free hour never travel in it.
The data, open
to be looked at.
Version 1.3.0 puts the keys on the home screen, opens the measured rows inside the app, lets the controls be carried to the edge of the display, and starts reading sensors that are not in the phone at all.
Keys on the home screen
Three widgets that need no app opened first: a point mark with your own labels, a key that starts a saved set of sources, and a tile showing what one source is collecting. Each key keeps its own copy of what it starts, so a preset switched in the app later changes nothing on the home screen.
Rows you can read on the spot
Browse records opens the raw rows of the last measurement: filter by type and time, search the payload, and a sequence number that holds across the whole file. Marking and hiding is crossing out in the printout — the stored measurement and the export are untouched.
Keys carried to the edge
Hold Start, Reset or Stop and drag it to the bottom edge of the display; there it stays put while you scroll anywhere. Let go outside a berth and the key swings back with an overshoot as big as the distance it travelled.
Sensors that are not in the phone
BTHome, Ruuvi, ATC and pvvx, Eddystone telemetry. Read straight from the Bluetooth scan that is already running: nothing to pair, nothing to connect, no new permission. The values land named and in SI units, beside the bytes they came from.
A panel you can
put your thumb on.
Version 1.2.0 turns the screens into the front panel of an instrument. Switches light up as a whole, keys sink into their base under the thumb, and colour is left to mean a reading — everything else is grey.
Switches that light up as one
The switch is a rocker from a switchboard, cast from translucent red plastic. Switched on, the whole rocker glows instead of a dot in the corner; the I/O marking stays readable in both positions and the rocker always leans to the side that applies.
Keys that stand on a base
Start, stop and the export keys sit on their own base and a press sinks them into it, the same as the buttons here on the site. Haptics answer in the same order: a click going down, a quieter clack coming back.
Grey panel, colour that means something
The panel is neutral grey, so every colour on it is a reading: green for controls and for running, amber for warnings, red for stopping. A screen grid with divisions and dashed axes lies under the content.
Half the download
The release build is shrunk and optimised by R8, which took the bundle from 8.3 MB down to 4.3 MB, and the outdated library Google Play kept reporting is raised through the services that pull it in.
Edges instead
of pebbles.
Version 1.1.0 stops the app looking like a sketch. Shapes go to the right angle, measured values get a dial typeface, and selections become rows that say what each option means.
Sharp edges and a dial typeface
Cards, fields and buttons keep at most two pixels of rounding, and measured values are set in a face where every digit is the same width — a column of numbers no longer dances under the eye. Spacing sits on a four-point grid.
Rows with a description, not pills
Technologies, presets and targets are rows with the current value on the right. On a source with parameters, tapping the row switches it and the chevron opens its settings — a pill could not tell those two apart.
Units say what they changed
Switching units used to close the menu and leave no trace. The dialog now says what it switched to, where it shows up, and that the export stays in metres.
Out of testing,
into the world.
Version 1.0.0 is the first public release. The instrument itself is unchanged; what is new is that anyone can install it, try it for an hour before paying, and read the screens in their own language.
An hour of measuring, on the house
Every phone gets one hour of measuring time a year, split across as many measurements as you like — the tool is meant to be tried in the field, not from a screenshot. The remaining time and the date it comes back are shown right above the Start button.
Bought once, not rented
Unlocking is a single in-app purchase at the Google Play price for your country. No subscription, no expiry, and it follows the account onto every other phone you sign in to.
Permissions explained before they are asked
The first launch no longer opens with a stack of system dialogs. A screen says what each permission is for — and that location is what Android ties cells and Wi-Fi to — and the system asks only after you press the button.
Screens in your language
The app and this site speak a whole range of languages, chosen by the phone or set for Signal Collector alone. The export never follows: it stays in SI, UTC and English column names, so two files from two countries are still one dataset.
Ready for the world
and for the Store.
Version 0.10.0 completes the move to the production identity, adds full English and US units, closes the release blockers and gives the instrument a calmer, more precise visual system — without changing how it is operated.
English and Czech, neither one a bolt-on
Text is no longer produced inside the collection layer, and errors are no longer recognised by their wording. The language can be switched for the app alone, and an English phone never gets half-Czech screens. Numbers follow the locale; the export deliberately stays stable.
Metres, feet and miles
Units can follow the phone automatically, or be forced to metric or imperial in the settings. Only the screen and the notification are converted; the database and the scientific export always stay in SI.
A release with no silent traps
The production bundle requires the upload key, targets Android 16 / API 36 and carries the final identity app.signalcollector. Corrected permission checks close the crashes that followed a revoked permission, and the updated SSH client brings security fixes.
Around the globe
runs time itself.
Inside the globe sits only what has a bearing. Quantities without direction got their own bands outside the horizon, the operator composes the instrument themselves — and measured data can finally leave the phone by a route other than the share sheet.
Four quantities in the ring
Noise, temperature, pressure and now light. The angle along a band is time, not bearing — one minute split into seconds, so the head of the trace sweeps like a second hand with a gap behind it where values have aged out of the minute.
You compose the view
The middle button switches off whatever the cursor rests on. A switched-off row stays in the list with its value, only struck through: the filter changes the picture, not the measurement.
Data can leave on their own
The gear icon gained S3, WebDAV and SFTP destinations. Passwords are encrypted with a key from the Android Keystore, an address without https is rejected, and the server key fingerprint is verified.
You can see
where the signal came from.
The pulsing background circle gave way to a globe of the sky. Satellites sit where they actually are — and anything without a direction lights the whole ring instead of inventing a bearing.
Satellites in their real place
Android reports azimuth and elevation for GNSS only, and the app has recorded them since day one — there was simply nowhere to see them. Colour separates the constellation, size and brightness carry C/N0, a filled dot counts towards the fix. Verified on a Pixel 10a: 20 satellites from four constellations, 14 in the fix.
What has no bearing lights the whole horizon
Wi‑Fi gives strength, not azimuth; Bluetooth gives none either, and cells report only their identity. Samples without direction therefore ripple the entire ring rather than a sector — a sector would claim the signal came from there. The ripples also rotate, so not even the tallest of them points anywhere.
It tilts with the phone, not just turns
Lying face up it looks into the zenith, held upright it looks at the horizon — and what was near the horizon moves behind the phone. Collapsed, the card leaves a flat compass with a needle to north: calm, no flicker.
Scrolling that
never jumps away.
While hiding, the header used to take part of the gesture for itself and the content was re-measured under the finger. Now it only observes the scroll and takes nothing from it.
Content follows the finger the whole time
The finger used to drag while the page stood still until the header had collapsed — and on reversing direction it expanded again first. The header now sits above the content and takes no part in scrolling; it simply moves away, taking the status row with it.
Nothing is re-measured mid-scroll
It hides by offsetting at draw time, not by changing its height, so the content inset stays constant. Measured on a Pixel 10a: 0.30 % janky frames and no missed vsync across ten drags over the threshold where the header switches.
It returns the moment you pull down
Direction decides, not position — you do not have to scroll back to the top to get the header. Because it also returns mid-page, it got an opaque backdrop; otherwise the title would sit on top of the card text.
A scan that does not
pretend to be a measurement.
Android throttles Wi‑Fi scans and keeps handing back the same result meanwhile. The app used to write it down again and again — and the export then claimed a measurement every five seconds.
A repeated scan is recognisable
Every attempt records the state FRESH, THROTTLED or UNCHANGED together with the age of the result; per-AP records are written only for a fresh scan. Without that, the data could not tell you where measuring actually happened — and for a coverage map, that is the whole difference.
Six times denser sampling
Measured on a Pixel 10a: with throttling on, 70 rejected attempts against 45 fresh scans; with it off, zero rejections and a fresh scan every 4.2 s at the median. At walking pace that is one sample every 6 metres instead of every 40.
Points on a floor plan, throughput per network
GPS gives no position indoors, so a place marker was added — you stop, mark a point, walk on. And a new optional source visits the Wi‑Fi networks you list one by one and measures their actual throughput, not just their signal.
Every second
gets its own row.
Continuous internet measurement no longer leaves holes in the timeline. When measuring is impossible, the reason is written down — and a Wi‑Fi network that is gone is recognised at once, not ten minutes later.
A second without a measurement is still a row
A capacity burst or a manual speed test holds the link for several seconds, and the data used to be left with a gap — a full minute in the worst case. Now it says BUSY, naming who held the link. A missing second cannot be told apart from a failed measurement; a written one can.
A dead Wi‑Fi is recognised immediately
After losing Wi‑Fi, the app stayed bound to a network that no longer existed, and over six hundred samples claimed the internet was not answering. The handle is now dropped as soon as the system stops knowing about it, and the app waits for a new Wi‑Fi with internet.
A sample knows which Wi‑Fi it came from
SSID and BSSID were added to the quality record — until now only the direct Wi‑Fi source knew them, and measured quality could not be tied to a network. Android placeholder values (RSSI −127, frequency −1) are also left empty instead of looking like readings.
From your pocket you can tell
how the run is going.
The notification for a running measurement no longer just says “collecting data”. It shows the duration and the record count, refreshes every five seconds and speaks up when data stops being stored.
Time and count in the notification
On a dark screen you see 00:02:43 · 29,880 records instead of a terse line. The duration is pure collection time, the same as on the status card — a pause between Stop and Start does not count towards it.
Data loss reports itself
As soon as samples are dropped, their count joins the line, and the title changes when writing stalls or fails. It is the one thing worth reporting before the operator looks at the screen again.
Ready for Live Updates
The notification declares itself to the system as a Live Update — Android's counterpart to the iOS Dynamic Island, a strip inside the status bar itself. On the Android 16 build under test it does not render yet, because that part of the system is not switched on; the app is waiting for it, ready.
The colour tells you
what was just captured.
A wave crosses the background every time something is written — and now in a colour that says where the sample came from. From across the desk you can see not only that data is flowing, but what is being heard right now.
A colour per source
Green is sensors, blue networks, amber GNSS and violet Bluetooth. Sensors run at 50 ms, so green is a continuous swell with the other colours flashing through it — a blue flash is a network scan, a violet one Bluetooth.
The wave keeps off the text
It used to be drawn over the content as well, tinting the title in the header, the messages and the status row. Now it sits at the very bottom: it passes under the header but leaves the type alone.
Content runs under the bars
When the header hides on scroll, the cards continue under the status bar instead of stopping at it and leaving an empty strip above. The wave shows through under the bars too.
Start no longer overwrites
work in progress.
Start resumes the last measurement instead of quietly replacing it with a new one. Beyond that, the phone lets your pocket know when the connection drops or data stops being stored.
Start continues, it does not restart
Until now every Start opened a new measurement and the previous one became unreachable — it stayed in the phone, but only the new one could be exported. Now it continues, and a clean slate comes only from Reset, which deletes the previous measurement.
A pause does not count towards the duration
The duration is the sum of the time actually spent collecting, not the span from the first Start to the last Stop — for a run interrupted overnight that would claim fifteen hours of collection. In the export it is running_ms.
Interruptions are in the data
Every stop and every resume adds its own session record with a timestamp. The data therefore shows when collection ran and when it waited, so a pause is not mistaken for a hole in coverage.
A buzz at a hole in coverage
Losing the connection is a soft thud, regaining it two light taps, a failed write three firm knocks. The phone is in your pocket while you walk, and these are the events the screen cannot tell you about. Every buzz goes into the data as haptic, so a window can be cut around the vibration.
The counter runs live
The count is no longer sampled. At two thousand records per second it used to jump by more than five hundred; now it flows, and only the digits slow enough to read are animated. The figures have fixed slots and sit on the baseline.
A panel instead of a form
Start, Reset and Stop are solid colour fields — an unavailable switch turns translucent but keeps its colour. Export got its own plate with a label on which the size of the pending file grows, and a green wave crosses the background with every written sample.
How much ground
we actually covered.
This version adds distance walked next to the duration, in a way that does not credit metres to a phone lying on a desk. Beyond that, the capacity burst shows its progress and technology selection is driven by presets.
Distance walked, in metres
The status card shows Distance instead of a static source count. The value is stored with the session, so a finished measurement still shows it after an app restart, and in the export it is distance_m.
Metres, not GPS noise
A walker covers about 1.4 m between one-second fixes, while the uncertainty of a single fix is usually larger. Distance is therefore not measured between neighbours but by moving an anchor once it passes the threshold max(3 m, accuracy).
Location accuracy on show
The accuracy of the last fix sits under the metrics. When the position is too coarse to count towards distance, the card says so outright, so a number that will not move has an explanation.
The capacity burst shows its progress
A new record for the start of a burst puts its beginning into the data, not only its result. Meanwhile the UI runs a countdown next to the transport, and a burst interrupted by Stop is not left hanging.
Technology presets
“All” and “Clear all” became a single switch, with Default in front of it. The app recognises hand-tuned sensor values, asks before overwriting them and offers to keep them as the Custom preset.
Legible messages
A dark treatment tinted by message type, dismissible by dragging down. An error stays on screen for 15 seconds, an ordinary notice disappears after four.
Internet mapping
while moving through a building.
Continuous transfer mapping got its own card ahead of Start, a heartbeat began watching collection from the inside, and a code audit cleaned up the bindings to Android callbacks.
A card of its own for mapping
A separate card keeps continuous mapping apart from the one-off speed test. It can measure Wi‑Fi, cellular data or both transports at once over a specific Android Network.
A data estimate up front
The interface shows the upper bound before you start: at most 204 MB per 30 minutes for one transport and 407 MB for both.
A heartbeat over collection
A running check of the collectors, the writer and the write queue. The session then distinguishes an ordinary Stop, a writer failure and an interruption after the process died.
The export admits its gaps
The header carries the last stored timestamp, the trailing gap and the counts of accepted, written and dropped samples.
Audited callbacks
Registrations for GPS, GNSS, NMEA and navigation messages are visible in the export itself. Bluetooth Classic stores the states of the discovery cycle as well as the devices actually found.
Fixes from the code audit
The duration of a finished measurement is computed from stored timestamps, stopping the mapping leaves no NetworkCallback hanging, and sensors deliver data on their own thread.
Maintenance that
stops dropping samples.
No new measurement feature. A version born from a code audit, fixing the reliability of collection, writing and export, and moving the format to V3.
Dropped samples on show
When writing falls behind, the count appears in the app and goes into the header as dropped_samples. Samples used to vanish unannounced; ending a measurement no longer loses the last of them either.
Ranges hold
A setting outside the allowed range is pulled back into it, so a zero interval no longer spins a scan with no pause.
A disabled Bluetooth is recognised
With the adapter off, the sources are not marked as measured and ADAPTER_DISABLED goes into the export instead of a blank.
Collection off the main thread
The GNSS, location, Wi‑Fi RTT and cellular callbacks run aside, so raw GNSS no longer slows the controls. The microphone is released only after the read completes.
Format V3
SIGNAL_COLLECTOR_TXT_V3 adds the dropped_samples header and drops the source_timestamp_ns column, which only duplicated elapsed_realtime_ns.
Schema 2 without losses
The database moves by migration and existing measurements survive. Temporary files created for sharing are cleaned up, so the cache no longer grows by a whole measurement.
Transfer quality,
measured continuously.
Alongside the one-off speed test there is now a per-second stream of samples of real download, upload and RTT — bound to a specific network and enriched with radio context.
A sample every second
The measurement runs from Start to Stop and produces roughly one network_quality_sample per second.
What a sample holds
A 64 KiB download, an 8 KiB upload and three small HTTPS RTT probes. The output carries the real transfer times, short-term throughput, RTT min/avg/max, jitter, errors and timeouts.
Capacity burst
Every 30 seconds a network_capacity_probe is produced with a 1 MiB download and a 128 KiB upload.
Forced transport
The test can be sent over a specific Wi‑Fi or cellular Android Network, even when both are available at once.
Radio and location with the sample
Every sample carries the last Wi‑Fi or cellular radio context and the last known location, including its age.
Quality, not a record
The small samples are labelled as measurements of quality over time, not of maximum internet speed. The server layer supports the CLOUDFLARE, CUSTOM and LOCAL modes.
Controls that
stay where they are.
A small interface release. Actions no longer move with the state of the measurement, the top bar gives room to the content, and a message can be dismissed when it is in the way.
Download and Share stay put
The buttons keep their place. Without a finished measurement they are dimmed and inactive, not hidden.
A vanishing top bar
It hides when you scroll down and comes back when you scroll up.
Recommend from the bar
Prepares a new e‑mail with no recipient filled in, carrying a subject, a message and links to the app.
Dismissible messages
Status notices are a bottom message that can be closed; otherwise they disappear on their own after a longer interval.
The storage note moved down
The note about local data storage now sits at the very bottom, visually subdued.
Active scan
and a measured speed test.
This version introduces an experimental active cellular scan with an exact reason for refusal, and a full speed test bound to the transport actually chosen.
Active scan events
Unambiguous ACTIVE_NETWORK_SCAN_REQUESTED, STARTED, RESULT, COMPLETE and FAILED instead of guessing support from the phone brand.
The exact reason for refusal
A failed scan stores the numeric code, the exception type, the message, the carrier privileges state and the state of the MODIFY_PHONE_STATE permission.
Kept apart from passive cells
The result carries scan_mode=ACTIVE_NETWORK_SCAN and only the operator Android supplied; an unknown one stays UNKNOWN.
A test over the chosen transport
Manually over MOBILE, WIFI or sequentially BOTH, with the traffic genuinely bound to the requested Android Network. The options offered follow the validated networks available.
A complete test summary
speed_test_result carries download and upload in Mb/s, bytes and times, the minimum, mean, median, maximum and p95 RTT, jitter, packet loss, errors and the server — together with the last cell or Wi‑Fi context.
Collection that survives
The measurement continues in the background through a foreground service, preferences survive a restart, and from an estimated 10 MB upwards the export preselects GZIP.
Pag-install
Ini-install sa pamamagitan ng
Google Play lamang.
Kunin ito sa Google Play
- 1
I-install mula sa Google Play — walang imbitasyon, walang listahan ng tester, walang paghihintay.
- 2
Sumukat nang hanggang isang oras kada taon nang walang bayad.
- 3
I-unlock ang walang hangganang pagsukat mula sa loob ng app kapag hindi na sapat ang oras.
Ang Google Play lang ang channel ng distribusyon: ito ang pumipirma sa chain ng update at walang direktang APK na inaalok kahit saan. Ang app mismo ay hindi nangangailangan ng account namin ni server namin para gumana.
Pagsubok, presyo at suporta
Isang oras kada taon
para makapagpasya ka.
Hindi mahuhusgahan ang instrumento sa field mula sa mga screenshot, kaya nagbibigay ang Signal Collector sa bawat telepono ng isang oras ng pagsukat kada taon — sapat para lakarin ang isang ruta, panoorin ang pagpuno ng singsing at buksan ang export. Ang oras ay binibilang sa oras ng pagsukat, hindi sa dami ng takbo, kaya maaari itong gastusin sa ilang lugar sa ilang araw. Kapag naubos ito, ang pag-unlock ay minsanang in-app purchase sa presyo ng Google Play para sa bansa mo: walang subscription, walang petsa ng pag-renew, at dala ito sa bawat teleponong naka-sign in sa parehong account.
1 orasng libreng oras ng pagsukat, muling ibinibigay bawat taon
Isang biliwalang hangganan mula noon, sa bawat telepono mo
24 na orasmula sa review hanggang sa na-triage na issue
Dumadaan ang feedback sa review ng Google Play; bawat bagong review ay napupulot sa loob ng isang araw, ginagawang issue at sinasagot, at sumasabay ang mga pag-ayos sa susunod na update. Walang dalang advertising, walang analytics at walang third-party SDK sa loob ng pagsukat ang bayad na app — ang presyo ang nagbabayad sa pagbuo nito.
Ano talaga ang kinokolekta ng app
Mula sa mga pisikal na sensor
hanggang sa mga network sa paligid mo.
Maaaring i-on o i-off nang isa-isa ang bawat pinagkukunan bago ang pagsukat, at para sa piling teknolohiya ay maitatakda rin ang agwat.
Cellular network
Naglilingkod at karatig na mga cell, mga parameter ng LTE/NR/3G/2G, mga pagbabago sa pagpaparehistro at ang eksperimental na active scan.
GNSS at lokasyon
1 Hz na GPS, mga satellite, hilaw na sukat ng GNSS, orasan, AGC, mga mensahe ng nabigasyon, NMEA at impormasyon ng antenna.
Wi‑Fi at RTT
Ang kasalukuyang koneksyon, mga kalapit na AP, Wi‑Fi 7 MLO, mga kakayahan at mga saklaw ng RTT/FTM papunta sa mga suportadong access point.
Bluetooth
Classic na pagtuklas at ang BLE advertising payload, kasama ang data ng manufacturer at ng service.
Mga sensor at ingay
Galaw, magnetic field, presyon, liwanag, proximity, rotation vector at isang tinatayang antas ng dBFS na walang naiimbak na audio.
Network at transfer
Mga sample kada segundo ng tunay na download, upload, RTT, jitter at timeout, 30-segundong capacity burst, at pagkakabit sa isang tiyak na Wi‑Fi at cellular network nang sabay.
SIM at eSIM
Slot, operator, MCC/MNC, roaming at kung aling card ang may dalang data — ang mga cell mismo ay nagsasabi ng transmitter, hindi kung sino ang tumitingin. Hindi itinatala ang ICCID ni ang EID: mga permanenteng numero ng subscription ang mga ito na nabubuhay pa kahit magpalit ng telepono.
Mga panlabas na sensor
Isang sensor na wala
sa loob ng telepono.
Sinusukat ng telepono ang kaya nitong abutin. Ang probe sa dingding, ang metro sa kable, ang receiver sa bubong — kailangang pumasok ang mga iyon sa ibang paraan. May apat na daan papasok, at gumagana na ang una.
Mga sensor na nagsasahimpapawid · gumagana na
BTHome, Ruuvi, ATC at pvvx, Eddystone telemetry. Walang ipa-pair at walang ikokonekta: sinasabi ng sensor ang pagbasa nito sa silid at naririnig ito ng scan na tumatakbo na. Temperatura, halumigmig, presyon, CO₂, mga particulate, boltahe — may pangalan, nasa mga yunit ng SI, sa parehong file gaya ng lahat ng iba pa.
Mga Bluetooth LE profile · nakaplano
Inilalarawan ng Environmental Sensing ang sarili nitong mga sukat, kaya ang metrong hindi pa naririnig ninuman ay mababasa pa rin kasama ang yunit nito. Katabi nito ang mga standard na profile — baterya, termometro, lokasyon — at ang Nordic UART service, na siyang salita ng sariling gawang probe.
Isang serial line sa kable · nakaplano
CDC-ACM, FTDI, CP210x, PL2303, CH340. Limang pamilya ng chip ang sumasaklaw sa halos lahat ng isinasaksak sa USB at hindi disk: mga board na Arduino at ESP32, mga u-blox na receiver, spectrum analyzer, mga metrong sumasagot sa SCPI.
Isang device sa lokal na network · nakaplano
Natutuklasan sa mDNS, binabasa sa HTTP o bilang payak na TCP stream. Nakatali ang kahilingan sa Wi-Fi network, kaya hindi ito lumalabas sa mobile data at nawawala sa daan papunta sa makinang isang silid lang ang layo.
Walang hinuhulaan. Ang pagbasang minarkahan mismo ng sensor bilang hindi wasto ay iniiwan sa labas sa halip na isulat bilang numero, ang naka-encrypt na payload ay itinatala bilang naka-encrypt sa halip na i-decode tungo sa kathang-isip, at ang format na hindi kilala ng app ay nananatili sa file bilang hilaw na byte. Nakalista ang mga key sa diksyunaryo ng data.
Mga kontrol sa labas ng app
Isang key na hindi nangangailangan
na buksan muna ang app.
Ang pagsukat sa field ay nangangahulugang isang kamay sa telepono at ang isa pa sa ibang bagay. Kaya bawat kontrol na mahalaga ay may puwesto sa labas ng app, at bawat isa sa kanila ay nagpapadala ng eksaktong parehong utos na ipinapadala ng screen.
Panel ng pagsukat
Isang widget na nagsisimula sa hanay ng mga pinagkukunan at sa mga agwat na naka-save dito. Habang tumatakbo, sinasabi nito iyon, dala nito ang mga bilang ng pagsukat, at nagtatanong muna ang pangalawang tap bago ito huminto. Hawak ng key ang sariling kopya ng sinisimulan nito, kaya ang pagpapalit ng preset sa app mamaya ay hindi tahimik na magbabago sa sinusukat ng home screen.
Markahan ang punto
Hanggang apat na sarili mong label nang magkatabi — pintuan, sulok, bintana ay tig-isang tap, agad na naisusulat sa punto. Kapag walang tumatakbo, sinisimulan ng key ang pagsukat at minamarkahan ang punto nang sabay.
Tile ng pinagkukunan
Isang pinagkukunan bilang isang malaking numero: mga access point sa saklaw, mga satellite sa fix, lakas ng ingay. Ang tap habang walang tumatakbo ay nagsisimula ng pagsukat gamit ang pinagkukunang iyon lamang.
Readout ng pinagkukunan
Hanggang anim na pinagkukunan, tig-isang linya, sa pagkakasunod-sunod na pinili mo — isang listahang babasahin sa isang sulyap sa halip na hanapin.
Tile sa quick settings
Simulan at Ihinto mula sa anumang app at sa ibabaw ng lock screen. Sumusukat ito gamit ang huling ginamit ng app. Sa ibabaw ng naka-secure na lock screen, hinihiling muna nitong i-unlock ang telepono: lokasyon na may mikropono ang sinisimulan.
Mga shortcut sa ilalim ng icon
Ang matagal na pindot sa icon ng app ay nag-aalok ng Simulan habang walang tumatakbo, at ng Ihinto kasama ang Markahan ang punto kapag mayroon na. Namamarkahan ang punto nang walang label — nasa key ng widget ang mga label, kung saan may puwang para sa kanila.
Ang notification
Habang sumusukat, dala nito ang tagal, ang bilang ng record at ang nalakad na distansya, kasama sa ilalim ang Markahan ang punto at Ihinto. Maaaring panatilihin ang Simulan sa shade habang walang tumatakbo, para ang pagsukat na hati-hati ay hindi mangahulugan ng paghahanap sa app sa tuwing sisimulan.
Muling iginuguhit ng pagsukat mismo ang mga key, minsan bawat limang segundo — hindi maaaring mas sariwa ang widget kaysa sa app na nagpapakain dito. Kaya nga may dalang oras ang bawat key kung kailan binasa ang mga bilang nito; ang stopwatch ang eksepsyon, kusa itong tumitiktak. Lahat sila ay ise-set up sa iisang lugar, Mga key sa home screen sa menu ng mga setting, at inilalarawan sa tulong.
Pagsusuri sa field, 10 Agosto 2026
Data mula sa tunay na
telepono.
Lahat ng nasa ibaba ay sinukat sa isang Google Pixel 10a na tumatakbo sa Android 16. Sa bersyon 0.7.2, isang pagsukat sa tatlong yugto ang nakakolekta ng 87,597 na record: lumago ang tagal mula 2:49 tungo sa 7:21 hanggang 8:12, hindi nagbago ang numero ng pagsukat, at hindi nabilang sa tagal ang mahigit dalawampung minuto ng pahinga sa pagitan ng mga yugto. Ang mga bilang ng distansya ay mula sa siyam na minutong takbo ng bersyon 0.7.1 sa parehong telepono — hindi nagbago ang filter ng distansya mula noon.
429 mng ingay ng GPS na itinapon ng filter ng distansya
0 mang nalakad ng teleponong hindi kailanman gumalaw
9/9na burst na may simulang naipares sa resulta
Ang unang 274 na fix ay may katumpakang nasa pagitan ng 9 at 114 m. Kung susumahin ang mga distansya sa pagitan ng magkatabing fix, magiging 429 m ito, o 28 m kapag sinala na ang mga magaspang na fix; ang paglipat ng anchor lagpas sa threshold ay nagbigay ng zero. Walang SIM ang teleponong ginamit sa pagsubok, kaya tamang iniulat ng cellular na sangay ng mapping na hindi available ang network.
Mga bersyon at materyal
Pag-install, mga pagbabago
at source code.
Nananatiling pribado ang repositoryo. Doon makikita ng mga naka-sign in na kasamahan ang source code, mga naka-tag na release at mga checksum ng APK.
Mga tala ng release1.5.2 · TXT
Naunang bersyon1.5.1 · TXT
Naunang bersyon1.3.0 · TXT
Naunang bersyon1.0.0 · TXT
Naunang bersyon0.10.0 · TXT
Naunang bersyon0.9.2 · TXT
Naunang bersyon0.9.1 · TXT
Naunang bersyon0.9.0 · TXT
Naunang bersyon0.7.3 · TXT
Naunang bersyon0.7.0 · TXT
Naunang bersyon0.6.1 · TXT
Mga APK artifactGitHub Releases ↗
Diksyunaryo ng dataFormat ng export · HTML
Source codePribadong GitHub ↗
Privacy
Hindi kailanman umaalis sa telepono ang nasukat na data.
Gumagana ang app nang offline at walang taglay na analytics, advertising, attribution o crash-reporting na SDK — at wala ring idadagdag. Ang bawat library na pinagbuuan ng app ay nakapangalan sa patakaran sa privacy, bawat isa ay nakatali sa eksaktong bersyon, kaya walang nagbabago sa loob nang walang release na nagsasabi nito. Ang opsyonal na tuloy-tuloy na mapping ng kalidad ng transfer ay gumagamit ng pampublikong Cloudflare Speedtest endpoint para sa maliliit na test na HTTPS transfer at pana-panahong burst; hindi ito pagsukat ng pinakamataas na bilis ng internet. Naka-off ang module bilang default. Kung bibilhin mo ang pag-unlock, isang ulat ng pagbili ang aalis sa telepono at wala itong dalang nasukat na data; inilalarawan ito sa patakaran sa privacy. Maaaring maglaman ang export ng sensitibong data ng lokasyon at ng mga pagkakakilanlan ng mga kalapit na network.
Paano ito gumagana
Mula sa isang sensor
hanggang sa isang row sa file.
Bawat pinagkukunan ay tumatakbo sa sariling bilis. Ang sample ay tinatatakan ng oras at ng huling alam na lokasyon, dumadaan sa isang non-blocking na pila at iniimbak sa lokal na database nang pabuwig. Ang mga may salungguhit na key sa diagram ay nagdadala sa diksyunaryo ng data.
Mga setting ng pangongolekta
Ang mga parameter ding inaalok ng app para sa bawat pinagkukunan bago magsimula ang pagsukat. Tumutugma sa implementasyon ang mga saklaw at ang tantiya ng data; agad na lumalabas sa diagram sa itaas ang anumang pagbabago.
ms
Saklaw 10–1000 ms
ms
Saklaw 100–60000 ms
s
Saklaw 5–300 s
s
Saklaw 5–60 s
s
Saklaw 5–300 s
Mapping ng internetNetwork para sa tuloy-tuloy na pagsukat
Kapag pareho ang napili, dalawang magkahiwalay na Android Network na handle ang sabay na tumatakbo.
ms
Saklaw 500–5000 ms
KiB
Saklaw 1–1024 KiB
KiB
Saklaw 1–256 KiB
s
Saklaw 10–300 s
KiB
Saklaw 64–10240 KiB
KiB
Saklaw 8–2048 KiB
407 MBpinakamataas na tantiya ng data na nagagamit kada 30 minuto ng mapping
8 400sample kada minuto mula sa pitong sensor
120sample kada minuto mula sa mapping ng internet
20Wi-Fi at cellular na scan kada 10 minuto
Ang tantiya ay pinakamataas na hangganan: sa mabagal na linya, mas matagal ang isang sample, kaya mas kaunti ang kasya sa parehong oras at mas kaunti ang data na nailipat. Hindi ito pagsukat ng pinakamataas na bilis — bakit.