iPhone 12 pro and T-Mobile Cellular Data Problem

I have an iPhone 12 Pro with T-Mobile, originally with Sprint but T-Mobile bought them. I am not able to get cellular data either in 5G or LTE network. No email, Safari, Apple Music, App Store, Social Media Apps, etc. Have read comments on T-Mobile community site that others are experiencing the same problem. T-Mobile is pointing the finger at Apple as an issue with IOS 14.6. I had my phone checked out at the Apple Store and it is working perfect. I am wondering is anyone else is having the same problem.