Signature mismatch: MODIFY_PHONE_STATE is a signature permission. Even with root, granting it via pm grant fails because the permission is not declared in the source framework of non-Oppo ROMs.
Telephony stack dependency: Oppo dialer uses custom ITelephony extensions (e.g., getOppoCallState()). On other ROMs, SystemService lookup returns null → crash.
Installing the Oppo Dialer on Android 13 requires specific steps because it is often not the default system app:
Steps to attempt (high risk of failure):
5. No visual voicemail tab
APK Mirror (Manual Download):
If the Play Store version is restricted in your region, you can find verified versions like ODialer 13.1.5 or newer versions (14.0.0+) that support Android 13. Key Features for Android 13 Oppo Phone Dialer Apk Android 13
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