I was a T-Mobile customer from October 2012 - January 31, 2014. I was a happy T-Mobile customer for almost the entire time that I was with them. Here in the Minneapolis area we have a reasonably large T-Mobile LTE network and their price has always been amazing for what you get, IMO. As you know they have branded themselves as the "Un-Carrier" in which the rid themselves of annual contracts. But under their new policies customers are forced to buy their entire device by either purchasing it in full or by financing it through T-Mobile and making monthly payments on it until it's paid off. Personally I like the ability to buy a subsidized phone every 2 years but I learned to live with this. As someone who enjoys trying different phones and operating systems I would often find someone on CL who either wanted to trade devices or buy mine which would enable to me to pay off my current plan with T-Mobile and then would allow me to start a new EIP plan (electronic installment plan) on a new phone. Many times I would make this deal at a T-Mobile store in front of T-Mobile employees who would often help to verify that my device or one that I was trading for was clean and had no issues associated with it. Never seemed to be any issues with this until in November when I did what I had done quite a few times before. I paid off a phone and went into purchase a new iPhone 5S. I was unhappy with the wobbly power button I received on the device and I went back into to exchange it when the manager told me that she could not exchange it because my account had been "flagged" by their loss protection team. I immediately got on the phone with their customer care team and forced my way through to the loss prevention department and talked to them and asked if there was an issue with my account. Eventually the issue was cleared and was settled. That is until last month. Up until this point I had been the only person on my account but when T-Mobile decided to start paying off ETFs I brought 4 family members over from Sprint on January 17. On January 20 I received a text message that one of my lines would be closed as requested. I called customer care and tried to find out what was going on and explained that I didn't want any of those lines closed. The CSR explained that she could not see a reason why a line was being closed but did see a note that stated that my entire account was being closed! She needed to research and would call me back. I never heard back from them and called later that day and was told by another CSR that the issue was now with their legal department and they were instructed not to talk with me. a Letter had gone out to me and would explain the situation to me and any questions I had needed to be in writing. At this point I was beyond confused and upset. The following day, I received a letter stating that as of January 28, 2014 my account would be closed and any/ all lines associated would be lost and if we wanted our numbers we needed to be ported to a new carrier by then. The letter also accused me of buying at least 5 handsets and never using them on my account only to have them later show up on other customer accounts which is completely false. Any devices I purchased were used on my account for some amount of time. They accused me of selling a devices for profit which I didn't. I sold devices to pay off my EIPs and to start a new EIP plan and according to them you can't. You are not allowed to re-sell your T-Mobile device under any circumstances even if you pay it off. That is complete BS! They could have easily cancelled my account before my brought over 4 other lines and we had them all trade in their phones but they waited until I did that before they decided to cancel my account. They never gave me the chance to explain myself or being able to discuss why think I did what they accused me of. Their legal team gave me one week to move my numbers over without being able to explain my side or even talk with me about it. The moral of the story is that if you own your T-Mobile device, you don't own that device. It's not yours and you can't do whatever you want with it. If they think you are selling your T-Mobile device they will cut you off at a moments notice with or without proof. Oh yeah and if you have 3 devices on EIPs like I did (mine, my wife's and my sister-in-law) good luck. My three EIPs were instantly dude in full ($1600+ due now).