I switched from T-Mobile in November 2023 to another carrier. I received a notice of collection in March 2024 from some "collection" agency saying I owe $222.00 to T- Mobile. I paid my final bill when it was due in November so I could switch and have never received any other bills from them, letters saying I owe anything- nothing. They did try to make it as difficult as possible to drop them. I'm not the only person who has this experience with them. Also their customer service is HORRIBLE! You're basically transported to some foreign country where you can barely understand them and you cannot get off the phone with them and they act like you're best friends. It's repulsive. I will be filing a complaint with the FCC and requesting legal action against TMobile. If you're considering using them as your carrier heed this as your warning and run from them as quick as you can.