Just reset the Network setting on your phone and it should be good unless you used up all your data. In this case, you need to purchase additional data Add-on.
Login to your account in your data usage to see if you have gone over.
@bce What plan are you on ? Maybe you used all your data ? do you have cellular data turned on in phone settings ? Or have data limiter set maybe ? and is your account active ? Does anything else work talk text ? Maybe try rebooting the phone if you haven’t already and account is active and you checked phone settings
