iPhone T-Mobile App issue

Hi everyone I may know the solution!

I had this problem all of a sudden two days ago, took it to t-mobile they did every single thing they could and could not fix my phone. Then I took it to apple, and immediately he knew what was wrong because he said he had 3 customers within the last 24 hours come in with the t-mobile carrier with the same problem I had.

How he fixed it is I logged into my t-mobile account, went to restrictions, and he said he thinks there was a problem where t-mobile or whoever has accidentally switched the restrictions to high. when I switched it to no restrictions my phone was perfectly fine again! I was so relieved. Hope this works for you guys as well.