DiPlay README

The project's README from github.com/shihabal3amri/DiPlay. As one markdown file: README.md.

DiPlay

CarPlay for compatible BYD Android head units. Wired and wireless, with the familiar DiAuto interface. Independent app: com.shihab.diplay.

BYD support scope: These projects focus on BYD cars. They may work on other brands, but other brands are unsupported and there are no plans to add support or fix brand-specific incompatibilities.

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DiPlay home

0.2.17 — public preview

Install on the car, not the iPhone. No jailbreak, dongle, Mac, account or authentication server is required for use. Core CarPlay does not require ADB; optional dashboard, battery, wheel-speed and parked-video features do. Your head unit must permit APK installation. The APK supports Android 7.1+ (API 25); Android 7.1–8.1 support is not yet confirmed on a vehicle. Wireless supports Wi-Fi Direct, the car’s existing hotspot or Existing Wi-Fi / Same LAN. Android 7.1–9 Wi-Fi Direct uses a firmware-dependent legacy path with generated group credentials and unverified requested frequency; see Android 9 Wi-Fi Direct. Android 10+ verifies its negotiated group frequency.

This is not an Apple-certified product. The APK bundles an experimental accessory identity recovered from public Carlinkit firmware, not a newly provisioned MFi identity for DiPlay. A bundled private key is extractable. Acceptance after future iOS updates, reliability across head units and suitability of that identity for general distribution are unresolved. This release invites community testing; it is not a guarantee of universal compatibility.

Earlier releases were tested on the development DiLink5.1 car: live windshield guidance and street names work, Car hotspot now starts CarPlay, and Wi-Fi Direct performance is substantially improved. Audio underrun recovery is improved in 0.2.15; remaining cutouts need current diagnostic reports. The 0.2.16 software Opus microphone fallback was accepted on a BOS Mini A1 head unit (Android 9) with an iPhone 12 on iOS 27. The floating-map test build was installed on the development DiLink 5.1 car; feedback led to the pinch corrections in 0.2.9. Earlier wheel-speed and video contributions were tested on a BYD Tang with DiLink 5.0 and an iPhone 15 Pro on iOS 27; wheel-speed dead reckoning in tunnels remains unverified. Broader head-unit and iOS compatibility is not guaranteed. The HUD firmware scope and cleanup limits are documented in BYD navigation.

What’s new in 0.2.17

See 0.2.17 release notes and validation for contribution links and remaining physical tests. General stutter, calls/Siri, decoder and model-specific reports still need current-device evidence. 0.2.16 notes remain available as historical guidance.

If a problem remains, reproduce it on 0.2.17, then use Settings → Diagnostics → Save diagnostic report. Android 10+ normally saves to Downloads/DiPlay; Android 7.1–9 asks for storage access and saves there too. If unavailable, use View report or Share from the confirmation, which identifies external/private fallback storage. Review the .txt and add it to a matching existing issue, or create one. Include vehicle/head-unit model, exact firmware and Android/DiLink, phone/iOS, connection backend, relevant settings, steps and failure time. Reports are shared only when you choose; never post your hotspot password.

Documentation

Existing Wi-Fi / Same LAN keeps the iPhone and head unit on an external router. See the guide for setup, build requirements and the BYD DiLink 4.0 / Android 10 clean-install validation result.

The app and release website are available in English, Arabic, Russian, Ukrainian, Spanish, Simplified Chinese and Traditional Chinese (Taiwan). Traditional Chinese uses Taiwan wording; the app also recognizes Hong Kong/Macao and explicit Hant selections without claiming separate regional translations. Choose the app language in Settings; on Android 13+, it stays synchronized with Android’s per-app language setting.

Source and credits

Based on xcertplay, GPL-3.0. The home/settings UI and website adapt DiAuto, AGPL-3.0; that license is included in docs/licenses. Preserve those notices when distributing modifications. CarPlay and its icon belong to Apple Inc.; no Apple or BYD affiliation or endorsement is implied.

This repository starts with a clean public source snapshot. Local research, tester reports and release-signing secrets are excluded. The complete source corresponding to the APK is provided with every release; experimental runtime identity assets are described separately in the build instructions and notices.

Local release packaging

The release APK intentionally contains the experimental accessory identity. The Git repository and source archive exclude all accessory and Android signing keys; tests generate synthetic identities at runtime. Source/CI builds omit runtime identity assets by default. Local release builds explicitly select an external asset directory. Publishing the APK makes its bundled identity extractable; building locally does not preserve that identity's confidentiality.

DiPlay (shihabal3amri/DiPlay)

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DiPlay
What is this?DiPlay is an independent CarPlay receiver app for compatible BYD Android head units, offering both wired and wireless connections with a DiAuto-style interface.
Does this install on the iPhone or on the car's head unit?It installs directly on the car's Android head unit as an APK; nothing is installed on the iPhone itself.
How do I install and connect it?Install the release APK on a head unit that permits APK installation, then connect by wired USB or wirelessly over Wi-Fi Direct (Android 10+) or the car's existing hotspot.
Do I need a jailbroken iPhone, a dongle, or a Mac to use this?No. Core CarPlay functionality needs none of those; only the optional dashboard-mode and battery-reporting features require ADB access.
Is this an officially certified CarPlay solution, and will it keep working?No, it's not Apple-certified. The APK bundles an experimental accessory identity recovered from public Carlinkit firmware, with an extractable private key, and whether it keeps working after future iOS updates or across all head units is unresolved.
Will this work on head units from other car brands?The project focuses specifically on BYD cars; it may work elsewhere, but other brands are unsupported with no plans to add support or fix brand-specific issues.
What happens to diagnostic reports?Diagnostics are exported locally and are only sent if you explicitly choose to share them.
What languages does the app support?The interface and website support English, Simplified Chinese, Arabic, Russian and Spanish, with the app language syncing to Android's per-app language setting on Android 13+.
Can I run DiAuto and DiPlay side by side?Yes, DiPlay installs separately alongside DiAuto, but only one projection app can run at a time.
Does it support HUD navigation?Yes, on verified BYD firmware it shows HUD navigation with turn arrows, distance and street names directly on the head unit's display.
Why might it stop working someday?Its CarPlay access relies on an experimental accessory identity recovered from Carlinkit firmware rather than an officially issued one, so compatibility after future iOS updates isn't guaranteed.
What are similar projects?DiPlay-CN, DiPlay, LocationSpoofer, vivi-music, YumaPlayer, Podroid, xcertplay, android-airplay-server
Which topics is it in?wifi, usb, gpl, localization, agplv3, android-app, kotlin, apple, i18n, reverse-engineering, mobile-app, agpl
Creator
shihabal3amri
Size
14.5 MB
Stars
11.2K
Updated
CommitOct 16
Age
23d
Commits · 90 Days