Fisherman - to answer your question no you cannot do that. Many many years ago it was possable to have two simcards with the same phone number, called cloning. This not only cant be done any more but is also illegal so I wouldnt even try anything like that. there however is no laws agianced trimming the plastic off of your simcard, Heck you could break the thing in half if you wanted, the company would just have to sell you a new one. About the part where the sales rep said that he would just give you an extra simcard if the other one got wet and ruined. The first thing about the sim card is that getting it wet would most likely not ruin the simcard. But if it did, they would not give you an extra one, they can just deactivate the old simcard and give you a new one with all your info on it. (you can only have one simcard per phone number).