I can connect my Huawei P10 phone via Bluetooth to the car without any problem. But every 2 to 10 minutes, it disconnects and disables Bluetooth on my phone and after about 1 minute automatically enables and connects again.
This only happens, if I am not charging the phone. So I think it has to do with battery optimization. But I cannot find any Bluetooth system app or any setting, where I could change something like this.
The same problem occurs in Ford, BMW and Mini.