Forum Discussion
Solved
Confused
what does it mean: The MSISDN is already registered to another IAM user account?
Are you trying to register this phone number for a T-Mobile ID? If so, you may wanna Community-2153 so our Tech folks can file a Help Desk ticket for you.
I am having the same problem, only I dont have time to talk to tech support. I just got 2 S22 Ultras and they are completely unusable because of this error. I am filing FCC complaints again Tmobile. This is unacceptable.
