Hi guys, I have been a owner of this phone since it came out last year. It has been serving me perfectly fine until 2 weeks ago I wasn't able to connect to the AT&T mobile network at all. My data usage hasn't reached the limit, in fact it is not even close to the limit yet. Is there anything that I can do before going for help at the AT&T retail store? On a sidenote, my phone charger is not working well (it is kinda loose, it won't connect properly with my case on, I think it might have been my fault for pulling out with too much force, I remember doing that accidentally once), do you guys think I could go to the AT&T store and get it replaced? Thanks for you feedback!