New Phone Bluetooth Issues with Car

[drewpy]

I have just replace a J6 with a new A21S. All fine apart from the Bluetooth connection to car (2018 Toyota). Although the initial pairing is fine, when I leave/come back/restart car, the pairing will not connect. The phone and car are still paired, I just receive a message on the BT screen saying "couldn't connect". the two buttons under paired device settings for calls and audio are "off" - they will not stay "on".  I have unpaired and re-paired, wiped BT Cache and also went into Recovery Mode and wiped Partition. I have also reset network setting. Absolutely every piece of advice on the internet has achieved nothing.

I tested my old J6 and also my work iphone 7 and they work perfectly on the BT for the car. Looks to me software issue but software is up to date. 

[drewpy]

It has taken a while but last week's software update finally sorted it. First time Bluetooth connection with car working automatically 

[mozart]

hi, tried to connect again to blue tooth in car and although now showing as being connected still not able to use through blue tooth. Extremely frustrated. 

[andy64uk]

Having issues using my a21s in our Honda CRV, I can hear callers but they can't hear me ,any ideas please

[kathycw]

I am having the same issue with my brand new A12 which will not connect to either of our cars but will connect to other blue tooth devices.  My previous phone was an A5 would connect but lost the connection every time I switched the engine off.