I have a G S III that was originally w/ t-mobile but the customer service help said I need to use the settings if it had been with AT&T???? That doesn't make sense to of the APN settings they gave me have worked. My husband has a GS II and in places where he has full coverage I have none w/ my GS III. Also my internet is extremely SLOW and I can not send or recieve pictures either. Can someone PLEASE give me the correct APN settings and any tips to speed up my internet ? THANK YOU SO MUCH IN ADVANCE!