Everyone I know has or is moving to MVNOs. I know alot that have gone to Visible or US Mobile (Dark Sky). I was a T-Mobile customer for 10 years and left last year for Visible. But I also have a story and was screwed over by T-Mobile. Mostly because/c the area I live in. So not sure if you are familiar with Northeast Ohio, but Cleveland area, I'm in a suburb called Lakewood. Well I had their T-Mobile Home Internet ($25/months deal) and for 2 years it worked perfect, then came 5GSA and that's when the issues started. Speeds started dropping and they oversold it in my area so bad where during peak times it was unusable. And the other issue was they installed 2 new towers really close by, normal tower was 2 blocks away, but once they installed the 2 new towers, but gateway started ping-ponging and I was having to call to get tower reset all the time. So left for ATT Fiber.
Then I started noticing my cell service downhill, not able to get data here and there. Again I'm in a major metro area that is being oversold. I call 611, and they tell me that I'm a legacy customer and that my data is deprioritized (I was on T-Mobile One Plus Promo), na that if I wanted priority data I would need to update my plan to a newer plan for the best data. Which I called BS but that was my last straw. In a matter of 3 weeks they lost me as a customer. And then after porting out, they still messed with me, because they kept billing me for my watch plan only and I cancelled it like 4 times, finally after 5 months, they cancelled it and I was totally gone.
T-Mo is great, but where they oversell it, you will run into issues. Before the overselling I was seeing 800-900 on the Home Internet, my phone speeds were over a gig at my house. But once that overselling happens. And they like to use the terms legacy, but it seems now they are just getting rid of legacy and forcing everyone to the same plans.
For me I'll stick with Visible, service has been great. But I have the iPhone Air (no mmwave) and found out my area is like 90% mmWave, so speeds aren't the best around me, but if I take the bus down to North Olmsted, Fairview, Rocky River area, they didn't allow Verizon to put up mmWave towers, so it's all C-Band there and I'm seeing gig+ speeds there... And yes Visible is treated just like Verizon for the higher plans...
And also someone said you can't finance iPhones when on MVNO. Not true, just do T-mobile version, and have it delivered to your house, not store. It's been a workaround for years. T-Mobile version is only one that is truly unlocked and they don't check. I'm doing mine on the Citizens Loan thing and I'm on Visible...