I have a Parrot hands-free Bluetooth device in my car. It has worked fine for many years with many different phones. My Xperia Z5 compact has connected to it automatically most of the time for the last eight months or so since I got the phone.
The phone recently failed, and I had it repaired. Since then I have been having problems with it not connecting automatically. If I tell the Parrot to connect it gets ‘connection failure’. If I unlock the phone and open the Bluetooth screen it connects immediately. If I then lock the phone it stays connected and works fine. If I switch the power off and it disconnects it will reconnect immediately.when power is restored.
Similarly, if I open and close the Bluetooth screen on the phone before starting the car it connects immediately.
It is acting like Bluetooth is switched off after some time by something which I cannot find. I have not done any timing to find out how long this takes.
Help.
