Okay so as of right now I have a samsung gravity 2 without texting or internet. I really want a blackberry curve 3g. If I order one from amazon.com and it arrives at my house will the curve open without sim card? What will happen if I put my sim card in it? Will Tmobile charge me because on the website it says ' this premium smartphone requires a web service ' and i dont have internet for my phone.. Please answer I need to know! Thanks in advance.