My M4 connects to my car via bluetooth and calls work fine most of the time, but sometimes the phone will lost the mobile signal. If I disconnect the phone from the car, it will lose the signal even if it had one when connected. I have to restart the phone to find a mobile signal.
It's nothing to do with the area as my previous iphone worked fine both with the car and in the area. Just seems to be something that effects the phone when it's been connected to the car. Any ideas on how to resolve ?
