Enable VoLTE for carriers in unsupported regions on Pixel devices.

Originally this app was made because I want to override specific configurations in one click (5G SA and signal thresholds). As of writing this, using setImsProvisioningInt (from Ims's version 1.0, it doesn't have an UI) seems to be the only way to set VoLTE enabled persistently (explained below in "Override configurations" section), so I updated my app and made an UI for it.

1. Install and start Shizuku
2. Install this app, start it, and grant Shizuku permission
3. Tap on Enable VoLTE
4. Go to system settings - Network & internet - SIMs - select the one you have enabled VoLTE for - turn on VoLTE (or 4G calling, depending on the carrier config)

• You may need to turn on VoLTE in system settings again if you reboot the system after using this method for the first time. Then it should stay on and there is no need to do it again for the same SIM card. Unlike overrideConfig, this will not be reset after reboots or system updates.

From "Config overrides" menu, you can override carrier configurations (the same as what Pixel IMS does, but these are some presets). However, starting with Android 16 QPR2 Beta 3, calling overrideConfig with persistent=true is no longer possible for non-system apps, so these settings will be reset upon system reboot.

• Enable VoLTE: Sets KEY_CARRIER_VOLTE_AVAILABLE_BOOL to true, not needed if you use the Enable VoLTE option on the first screen.
• Enable NR(5G) SA: Sets KEY_CARRIER_NR_AVAILABILITIES_INT_ARRAY to [1, 2] which enables both NSA and SA.
• Enable VoNR(Vo5G): Sets KEY_VONR_ENABLED_BOOL and KEY_VONR_SETTING_VISIBILITY_BOOL to true. VoNR lets the device stay connected to 5G when calling instead of switching to LTE.
• Enable VoWiFi: Sets the following options to true.
  • KEY_CARRIER_WFC_IMS_AVAILABLE_BOOL
  • KEY_CARRIER_WFC_SUPPORTS_WIFI_ONLY_BOOL
  • KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_ENABLED_BOOL
  • KEY_EDITABLE_WFC_MODE_BOOL
  • KEY_EDITABLE_WFC_ROAMING_MODE_BOOL
  • KEY_WFC_SPN_FORMAT_IDX_INT
• Override 5G signal threshold: Sets KEY_5G_NR_SSRSRP_THRESHOLDS_INT_ARRAY to [-115, -105, -95, -85]. This option exists because with AOSP's default values I only get 1 bar 5G signal in my area, but on other devices the signal are full or at least 2 bars (dBm values are the same).
• Disable Signal Inflate (5 bars to 4): Sets KEY_INFLATE_SIGNAL_STRENGTH_BOOL to false. Changes signal icon from 5 bars to 4, also makes unified signal icon possible if using 2 SIMs.
• Show IMS status in SIM status: Sets KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL to true. This adds IMS registration state to About phone - SIM status. Android 16 QPR3 Beta 1 has a bug which crashes com.android.phone when opening PhoneInformation or PhoneInformationV2 test menu. This option allows seeing IMS status without going to the menu.

If you need manual/custom overrides, please check out Pixel IMS.

• Pixel IMS
• Ims
• 类原生5G信号差的解决办法