Originally Posted by
mtmt88 you're in luck, my friend, i just bought a 920 yesterday and am using it on T-mobile now.
popped in my T-mo SIM card, 920 asked for unlock code, entered, no problem.
updated Amber/GRD2 on it (i will write a summary on the sticky "920 update thread" as well - a lot of loose, non-centralized quesitons & answers there.)
the only other thing i did was manually input the APN setting to enable picture text.
i have not done any speed tests on it. also i've exhausted my 500MB 4G data quota, so all my data is on 2G anyhow.
good luck.
UPDATE:
T-Mobile just wasn't working me on the Lumia 920.
I was getting decent reception on T-Mo with the 521, but on the 920 signal was very weak, sending/receiving MMS was horrendous.
so I made the move to Straight Talk and worked much better.
the $45 plan with ST was also better than T-Mo's.