Not true, iPhones were unlocked automatically after this 60 day timeframe. My gf has been using a 14 pro max previously financed from verizon on t-mobile since just outside that timeframe.
Here’s another fucked up policy that’s about a year old from T-Mobile: I very rarely financed phones direct through T-Mobile. My 15 pro max will be the last since I had to fight them for a device unlock prior to paying off in full. I would have paid it off in full if they didn’t change their policy to kill bill credits if you do pay early. I threatened them with costco’s 90 day return policy if they didn’t do it since I run dual sim for coverage, they relented.
I am curious though, had I never had the phone unlocked, I wonder if Apple would have swapped in an unlocked board when they did my board swap for RCS issue?