I have an app for the wife's volvo, so I can lock her doors, start her car etc.  It has worked with no issues, but of late,  I went to use it and got "no internet connection,"  it wouldn't connect as it has always done.  I do have the latest ios.   So eventually I contacted Volvo and they said to turn off the wifi and it should work. It did.    I was home with my modem/router maybe 2 feet away.   Strange I never thought of it.  I have always enabled wifi on the phone  and never had that problem.   Leads to the question, I have Verizon with unlimited access and should I have the wifi off at home ?