iPhone 12 Pro Max on T-Mobile Essential NCC family plan.
After updating to iOS 14.5, cellular data won’t work. It doesn’t matter if it’s connected to 5G or LTE, or at whichever signal strength. It doesn’t have internet access. I can only make phone calls and text.
I have tried network reset, factory reset, and reinsert sim. I even went to the Apple store to have my phone replacement eventually.
However, the issue persists on the new phone as well once after it was updated to iOS 14.5.
Only solution for now: is downgrade to iOS 14.4.2 or earlier. (As of may 3 Apple has stopped signing iOS 14.4.2 or earlier)
Also, other people in my family plan with iPhone 12 models updated to iOS 14.5 have the same cellular data issue.
There are several people on Reddit reporting the same issue as well. All currently on essential plan.
Hopefully T-Mobile and Apple is working on a fix!?
Ps. The most recent iOS 14.5.1 doesn’t fix this problem.
Best answer by tmo_mike_c
This’ll need to be sent to our network engineering team with a Trouble Ticket. You’ll have to contact our Tech Care team and they’ll file one for you to get this resolved.