Can't receive data when on 5G UC

I have been having the exact same issue on my iPhone 14 Pro and two other iPhones. Furthermore even switching to LTE is not consistent. I contacted tech support many times in the last few days - all I am hearing is engg team has a ticket open and they are working - 24 - 48 Hrs ETA - this is as good as no ETA :|.

Here is a pattern I noticed - when the phone goes into sleep mode - to save battery if I not mistaken, the cellular data radios operate at low power - when you wake up the phone - typically unlocking or tapping on the home screen, that's when it does not connect back to the tower. For me I am forced to turn on Airplane mode and turn in off and even then, data only works on LTE. This issue started in the last 10 days - perhaps some upgrade/change is not really helping. I dont mind slower speeds - but inconsistent data - is just not acceptable. 

Also Neville Ray is on Twitter @NevilleRay

I just emailed him too.

I just sent an email to Neville Ray the CTO  of T-Mobile neville.ray@t-mobile.com of and the regional Engineer about this issue. Will let you know if I hear anything back. I have provided Neville Ray's email if anyone else wants to contact him.

So disappointing. When I'm using T-mobiles most advanced network, my phone is a brick - no bandwidth, no data. And T-mobile's response? Go back to a legacy network, to LTE. This has been going on for over a year. When will T-mobile resolve these issues? My new iphone 14pro was a brick this morning, out of the box  5G is enabled. Sure enough, it was connected to T-mobile 5G UC. Once I went back to LTE things were fine again.

Had same issse this AM and had to switch to LTE - note the new carrier settings in iOS 16 don’t affect the problem.

marmen wrote:

Why only my phone? 

If you are getting a solid 5 bars 5gUC, then I've had the same issue at times: congestion (i.e., near a ball game).  Anything less than 5 bars, 5GUC suffers tremendously (your phone can see it but the tower is not hearing your phone).

My solution, unfortunately, has been to disable 5G altogether,

might be the area.  I have no issues with 5g uc in my area.  in fact, my phone (S21) often ends up on N41 SA (no LTE) often where I am.

I have the new Galaxy S22. All of a sudden two days ago, my phone started switching from 5G to 5G UC. Once it switches over to 5G UC, I completely lose all network. My phone goes dead. I spent over an hour with TMobile tech trying to figure it out. The only thing they could figure out was that there was an issue with their towers in the area. It would take 3-5 days to fix. However, my coworkers with TMobile are not experiencing any issues. Why only my phone? 

I’m having the same issue with my iPhone 13 pro -  no connectivity on 5GUC had ti change the data settings to LTE.

Do we know the root cause of the issue?