My Galaxy s5 often fails to find the available network (error message that network unavailable) even when there are a full set or bars or when I am on a strong wi-fi (I use t-mobile wi-fi calling) even after I had just used the phone for a call or text. A phone restart always fixes this but it is very annoying. It can happen a couple of times a day or not for a day or 2. what's up?
