Why does my phone go off line every time I leave my house?

[AC Question]

Unless I am using my home wifi my phone goes off line. I have connected to guest wifi and I am still told I am off line. I have turned the wifi off and tried just using phone data and it says off line.

 

[the tall guy]

Hi, what device do you have? have you spoke to your carrier as your mobile data doesn't seem to be activated?