Can't receive data when on 5G UC

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.