Can't receive data when on 5G UC

This has been going on for so long. At this point I have no other option but to go elsewhere for cell service. T-Mobile 5GUC service reminds me of dial up. 

I recently moved to Magenta Max with 14 pro max. Whenever the phone shows 5G UC there is hardly any data. The speedtest fails. I did the trick of turning off 5G and moving over to LTE and it seemed to work but then what is the point of paying for 5G.

Also, I noticed it happens severely during 3PM-5PM when school dismissals are happening. I am in Houston, TX suburb.

Anything else I can do, I am guessing I already have the highest plan and the latest 14 pro max. Customer Service does not have any clue about this. 

i was replying to the 3pm-5pm post right above mine.

My data is super slow all the time. I'm so mad I could spit! I'm probably going to change to another phone company because of it. This is absolutely ridiculous.

I am on T mobile home internet. It must switch to 5Guc 20 times an hour at times. When this happens none of my home devices work or connect to Wi-Fi.  It will be impossible to work from home.  I have called T-Mobile support many times.  They just run through the same reset procedures.  I am very disappointed as I wanted to give T-Mobile a go.  They offer no assistance or solutions. It is clearly happening to others as well. 

I came for the same reason. I just switched to t mobile yesterday and right away noticed 5G UC means my connection sucks. On S21 Ultra + . I need to ask my wife about her phone but assume it's the same since it's the same type of phone we both ported over from Verizon. When it goes to regular 5G it sends "normal" but once UC shows up it's pointless to try.  I tried some of the things above and I'm on a physical sim but so far nothing concrete.  I'm going to try that airplane mode thing, years ago I had an S5 that needed that trick to work.

This is a relief to see that it’s a widespread issue - and so unbelievably disappointing the casual and consistently careless response from T-Mobile.

So I'm in Northern Virginia, I got an iPhone SE 2022 (from T-Mobile) and Magenta MAX. In fact (and this was all discussed in detail at their store, with total reassurances that it would all work), a PSIM from T-Mobile LTE (work line, for calls only) and eSIM with Magenta MAX for personal call and "unlimited" data.

From the start, the same problem highlighted on this thread on different brands, different models: at 5G, lightning fast speeds. But the moment it goes to 5G UC (which it *always* does, automatically), it's a brick. If I use the work line (LTE) for data, it becomes normal. If I use the Magenta MAX line and turn off 5G, it also works normally in LTE.

Customer service… Geez, I just feel lied to. First (after making you do all the obvious dummy "fixes" that never work) they said there was some construction going on and it was going to get better. It didn't. Then when I pushed hard with facts, speed test results, they buckled ("yeah we have identified this issue with the iPhone SE 2022 model in eSIM"). A lie, as here we can read cases from different models and brands. Their solution? Turn off 5G for good, as speeds are "very similar". Did they get trained to really recommend that? (In the posts above I conclude that… yes, it's a standard answer).

Last straw for me: we are now moving to a new location. We go to the T-Mobile "coverage map" to check: and the entire street we are moving to (I'd say every single area in Northern Virginia in fact is showing like this as well) shows as a solid FULL coverage for 5G, 4G, everything. I go on the street (outside the house!), it's ONE bar. One bar on LTE, one bar on the useless 5G UC. So choppy and sluggish even when on LTE. Inside the house? Nothing. No data. Voice calls ridiculously choppy.

I guess Verizon it is then for my personal line. And a big push for my company to drop T-Mobile for the business line provider as well.

Hola all,

Is this data stalling issue on 5G still happening to you guys?

Any improvements recently?

gracias

I had this issue on my S21U once UC started showing up. This is what worked for me.

Go to device settings. Then connections. Then sim card manager. Deactivate the SIM. Wait about 15 seconds. Reactivate sim. Enjoy faster speeds.

Hope that helps. 

Been having the same issues on my iPhone 12 Pro since it rolled out back in November. Very frustrating. Would love to have a solution as well. Got any sort of response yet, T-Mobile? It's been a long time at this point…