Problem with WLAN and car FSE! Goodbye ACE 3 ...

Hello, the ACE 3 is actually a super smartphone in terms of price / performance, just would not be the wifi problem! Constantly a intabile WLAN connection is shown me. Even in a short reach to the router is the problem. The switching between WLAN and mobile data is sometimes incorrect. Manual intervention is required. A further problem relates to the coupling with the car free pitch device (Skoda BT). If it's connected, I have no more power! Once it is separated is everything okay again! Time goes sometimes not. I send it back and take first again the old Galaxy S Advance. That still works wonderfully ...