Why can't I connect to the internet through Mobile Data?

A

AC Question

Can't connect to internet thru Mobile Data

CAN apparently connect thru WiFi, and Have Already checked under Data Useage setting to make sure that Mobile Data is checked. Is there another setting that I need to reset?? Was working fine when I went to sleep (with it on). Woke up and no go. Concerned that MAYBE conflict may be in 'Internet' and 'Chrome'?? I am new to this. Hard phone 2 weeks. Just released after 10 years in prison and a LOT of catching up to do. Any Site recommendations for learning this stuff??