I live in an area with no mobile signal so when I chose my provider it was very important to have wifi calling for calls and texts so I went with iD Mobile who could provide both. However it does not come on automatically and the only way to activate it is to turn my phone on and off and then it stays on for a short while until it drops out again. I have done all the checks that my phone has the right software etc but nothing seems to make it connect automatically and stay connected. My wifi signal still shows and is strong but next to it it says No Service. Any suggestions?