Hey guys I have a been a loyal t mobile customer since 2001. I love their plans and rates. I currently have an HTC Sensation 4g phone. However I'm a big apple fan. I would like to buy an unlocked 4S and useit on tmobile. However i know that I can only use it on edge (2G) network. I would like to know if it is ok and fast enough for my needs? Facebook updates, email, mms, and I would like to use Siri. Thanks guys!