T-mobile is a different phone so you need a T-Mobile phone with a t-mobile card...

My Bro found a T-mobile phone and stuck his T-M card in it and it just worked...
Skink Reviewed by Skink on . cell phone question ok so i broke my phone the other night and now when i try to put in the SIM card i have it keeps telling me to insert SIM when i turn on my phone so im guessing its broken. so there was this phone thats been sitting in the lost and found at my job for like 5 months so i was like fck it and took it haha. now when i try to put in MY sim card it keeps saying wrong card? i dont get it?? why is it doing that. this person had t mobile and i have at&t/cingular. it also says "call SOS?" when it says Rating: 5