Why my data connection is not working ?

[AC Question]

Please help me to fix my data connection. I don't know what to do. I told my friends a couple of days ago and he told me to buy internet but after I bought internet the problem is keep on. I don't know why my data connection is not working. Why this problem is coming to me. Do I have to format my phone.

 

[belodion]

*Have you spoken to your carrier about it?