shihabal3amri / DiPlay

# DiPlay
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**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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## 0.2.21 — 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 7.0+ (API 24); Android 7.0–8.1 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 7.0–9 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.
- Wired USB and wireless CarPlay with local authentication.
- BYD HUD navigation with arrows, distance and street names on verified firmware.
- Car hotspot support, improved audio buffering and saved receive diagnostics.
- Automatic address discovery, fixed-channel Wi-Fi fallbacks and successful-configuration memory.
- Icon/text size, resolution and frame rate; applying a display change reconnects CarPlay.
- Local diagnostic export. Reports are sent only if you choose to share them.
- Separate installation alongside DiAuto. Run one projection app at a time.
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 naviga