I had about 4-5 Samsung Behold IIs exchanged, and then T-Mobile sent me a Mytouch Slide. The screen seems loose and looks somewhat lopsided when I slide it up, however I was willing to keep the phone anyway with hopes of avoiding another phone exchange fiasco. After I had the phone about 3-5 days I would constantly lose all service for approximately 10-30 minutes; during this "outage period" the phone was useless, and it continually told me in the notification bar to set the time. I tried to manually acquire the T-Mobile network with my phone, but when I did, it would tell me that my SIM card did not allow me to register to the network (or something along those lines). I called customer service and they had me do a factor reset and swap out the SIM card for an updated version. This solved the signal issues, however my phone began restarting whenever I tried to make a phone call. It had done it twice when I initially got the phone, but after the factory reset and the SIM card swap, it seemed to have been fixed; I was wrong. I performed another factory reset, and attempted to make phone calls before installing any apps, to make sure that none of them were causing the issue. Now the phone seemed to be worse, before it would only restart if I hung up from a call, and then called someone else; now, it restarts when the screen says dialing, regardless of who I'm calling, when I'm calling them, or where I am. I called customer service again and explained to them what was happening, and now I'm waiting for my second Mytouch Slide. I really hope my newly-refurbished Mytouch Slide has no phone call issues, camera issues or build quality concerns...
UPDATE:
So I received my second Slide, and although this one allowed me to make phone calls just fine, the screen keeps rolling upwards. The upward rolling screen problem began about 3 days after I received the phone. I tried factory resets, etc. etc. and nothing worked. T-Mobile and I performed another phone swap, and I received my THIRD Slide...This phone makes phone calls fine, the screen isn't running away from me and when I slide the screen up it isn't lopsided, which was another problem with the first two phones. One problem with my third slide, is that it is the old keyboard design, and the keys seem really stiff. However, I am quite tired of running around to UPS stores for T-Mobile, and I'm just going to stick with the old keyboard design and stiff keys since everything else works; perhaps my fingers will get stronger or the keys will loosen up a bit over time. I probably would exchange his phone too, but after the two Samsung Behold IIs I had on my account, and the Slide dilemma, I pretty much am fed up with exchanging phones with T-Mobile.