No data when there is an exclamation point on my signal bars?

[AC Question]

There's often an exclamation point on my signal bars, and I have no data. It will work fine one minute, next no data, no games, no internet. I can call and text. How do I get this exclamation point to disappear?!

 

[belodion]

It means that you have no Internet connection. Why that happens, we shall have to try to diagnose. Assuming that your signal is at least adequate, start with the simplest things....clean the contacts of your SIM. Tell us if no go and we'll go on from there.