BYD · DiLink 3–5.1 · UI7
Real consumption, every trip, battery health and automations — on your car's own screen. No OBD dongle, no phone.
Android APK for DiLink head units
The app
Made for a landscape car screen: big touch targets, the key number biggest, readable at a glance.
Charge, range and energy left, the trip you're on, two trip counters and a weekly insight into how you drive.
Every trip is logged by itself: route, speed profile, real consumption and cost. Browse by day, week or month and see how the weather changes your consumption.
AC and DC sessions are recorded automatically and priced from your tariff history, charger losses included. Charging curves show how the power changed with the charge level.
A live, animated battery pack with charge level, charging power and time to full — plus state of health, temperature, cell balance and how much the car loses while parked.
A live top-down view of the car: doors, windows, sunroof, locks, tyres, climate and lights, with each system's data in one place.
Build WHEN → THEN rules from car data, places, time, steering-wheel buttons, voice or widget buttons — and let them control climate, windows, locks, lights, apps, navigation and messages.
And more
Put information where your eyes already are, talk to the car, and connect it to the services you use.
Information where you need it, without leaving your app.
Press a steering-wheel button and speak. Speech recognition runs offline, right on the head unit.
Add an optional AI agent with your own API key: it reads car data, answers questions and can run car commands.
Speech: Russian only
Send data where you want it — only when you set it up.
The whole interface in Armenian, Russian and English. The theme follows the car's day and night mode, or you pick one.
This website, too:
How it works
BYDunlock is an Android app for the DiLink head unit. It reads live data and sends comfort commands through the car's own system service, over ADB debugging on the head unit itself. Nothing to plug in.
Everything stays inside the head unit
BYDunlockApp on the head unitDiLink 3 · 4 · 5 · 5.1 · UI7
Android 10–13 on arm64.
Car controls are tested on the BYD Leopard 3 (Fangchengbao Bao 5).
Other models read their data through the same system service, but a few values may show as “—” and some commands may not respond.
Install
The APK goes to the car, not to your phone. A USB stick is all you need to carry it there.
Not sure about your car? Write to contact@hakobi-tech.com with the model and firmware version.
Save the file on a computer or phone; the next step carries it to the car.
Android APK for DiLink head units
Put the APK on a USB stick, plug it into the car and open the file in the DiLink file manager. If Android asks, allow installing apps from this source.
If your computer already reaches the head unit over adb, install the file with:
$ adb install -r BYDunlock-v….apkUse the name of the file you downloaded.
Find it in the app list and start it.
Choose the language, grant the permissions it asks for (each one says why), and enter your battery capacity and electricity tariffs. Then allow background work: in the DiLink settings, open General → Disable background apps and switch BYDunlock off, so the system doesn't stop it.
The first time the app reaches the car, DiLink asks Allow USB debugging?. Tick Always allow and confirm. Live data then appears on Home.
Stuck on a step? Write to us
Privacy & safety
BYDunlock is local-first: trips, charges and settings live on the head unit. Something leaves it only when a feature needs it, and most of those features stay off until you turn them on.
Update checkOn by default
When the app starts, it asks api-byd.hakobi-tech.com whether a newer version exists. No car data is sent, and you can switch the check off.
Voice modelsWhen you turn voice on
Russian speech models are downloaded once, from our server and from GitHub (the open-source sherpa-onnx project).
Crash reportsOpt-in
Off by default. If you turn them on, crash details are sent with a random install ID; keys, tokens and coordinates are removed first.
Diagnostic bundleOnly when you tap
Uploaded only when you create one. You see what's included, private data is removed first, and you get a support code.
Services you connectYour choice
ABRP, your webhook, the smart-home bridge (it takes commands from your server; opening and unlocking stay speed-gated), backups to WebDAV or Telegram (encrypted with your passphrase), online voices, web search and the AI agent with your own keys. Each sends data only to the service you set up.
Trip maps load their tiles from the map source chosen in Settings.
Car commands are limited to an allowlist of comfort functions. Commands that open or unlock are blocked above a set speed; unlocking the doors and opening the front trunk are also blocked whenever the speed is unknown.
Open the front trunkOnly at a standstill
Unlock the doorsUp to 30 km/h
Open the sunroofUp to 80 km/h
Open the windowsUp to 120 km/h
Climate · Windows · Sunroof · Door locks · Trunk · Lights · Seat heating · Sentry mode
Car controls are tested on the BYD Leopard 3 (Fangchengbao Bao 5). On other models some commands may not respond; tell us your model and we'll check.
No ads and no analytics in the app. This website sets no cookies either.
BYD cars with a DiLink head unit: DiLink 3, 4, 5, 5.1 and UI7 firmware, Android 10–13 on arm64. Car controls are tested on the BYD Leopard 3 (Fangchengbao Bao 5). On other models a few values may show as “—” and some commands may not respond. Write to contact@hakobi-tech.com with your model and we'll check.
No. BYDunlock runs on the car's head unit and reads the car through it; on a phone it cannot reach the car. Download the APK on any device, then copy it to a USB stick for the car.
Right now, yes: the APK on this site is free to download and use, and it shows no ads.
BYDunlock does not flash or modify the car's firmware. It uses ADB access and a small helper process to talk to the car's own system service, and you can uninstall it at any time. Warranty terms depend on your dealer and country, so if in doubt, ask your dealer.
Some DiLink 5, 5.1 and UI7 firmware hides the developer settings. There, ADB is switched on through “remote unlocking”, a service offered by third parties; BYDunlock cannot do it by itself. Without ADB, the app still works as a trip logger from the car's built-in trip database, but live data and car control are not available.
The whole interface is in Armenian, Russian and English. You can switch any time in Settings → General.
No. Speech recognition and spoken replies work in Russian only, because the offline speech models are Russian. The rest of the app is fully available in all three languages.
When it starts, the app checks api-byd.hakobi-tech.com for a new version and offers to install it; you can switch the check off. You can also download the latest APK here and install it over the old one. Your data stays.
Email contact@hakobi-tech.com with your car model and DiLink version. For a problem, first create a diagnostic bundle in Settings → Data & backup → Diagnostic bundle → Create (it is also on the Setup check screen) and include the support code it gives you.
In Settings → Data & backup you can export your history to CSV, save a backup file and restore it later, or set up automatic encrypted backups to your own WebDAV server or a Telegram chat.
Download the latest APK, then follow the five install steps.
Android APK for DiLink head units
The APK is for the car's head unit, not your phone.
Contact
Write to us by email. For a bug report, add your car model, DiLink version and, if you have one, the support code from the app.
BYDunlock is made by hakobi-tech, an independent software studio: hakobi-tech.com