Unable to get phone to connect to android unit bluetooth

Slurp

I transferred my phone to a new phone using seedvault but not I cant connect to my android unit it tries to connect but it can't I reset my android unit in my car but still not connection every other device connects just fine to it and it only started doing it after I transferred phones from seedvault.

Any idea what I can do? I reset wifi/bluetooth settings already.

Novalissoide

Slurp I think you would get some answers if providing us with details like;
What 'android device'?
Transfered what phone to what device? Which OS:es are we talking about, which model of car? Which apps besides seedvault are involved if any?

Johnnyloans

Slurp

If the new phone only had this issue after loading a seedvault backup, then you may have to manually back up texts, contacts, etc and factory reset to restore phone<->car connectivity.

Slurp

Novalissoide

Pixel 7 Pro to Pixel 7 Pro (both GOS)
Pixel 7 Android 16

The Android Unit is Android 8.

The only app involved is seedvault. When trying to connect pixel asks for PIN for android unit it says pairing than 20 seconds later it just stops and dissapears and reappears on list of devices to connect too.

I've factory reset the android unit. I've reset wifi/bluetooth settings on Pixel 7 Pro. I'm hoping to avoid factory resetting the 7 pro.

Johnnyloans

Slurp
Not entirely sure if youre using android auto.
There's an update (probably in alpha or beta currently within "app store")

add BluetoothA2dp.getConnectionPolicy() stub to resolve wireless Android Auto crash
-https://discuss.grapheneos.org/d/33525-gmscompatconfig-version-169-released

Horatio_Bunce

Similar situation. Pixel 9, could not reconnect to spa Bluetooth after forgetting device. Says wrong pin code. Could not reconnect to car (not android auto). Does not work on safe mode. Wiped graphene and completely reinstalled everything from scratch. Still can not connect to spa and headphones with same message "incorrect pin / can't communicate". Can now at least connect to car head unit.

de0u

Horatio_Bunce Both ends of a Bluetooth connection store an encryption key for the other device, which is associated with the other device's Bluetooth MAC address. If the Pixel is the same Pixel, then the headphones may believe they already have an encryption key for the Pixel, even if the Pixel has forgotten that key. If that's the case then it may be necessary to cause the headphones to forget their stored Bluetooth keys.