Do all iPhone 4s have sim cards? So they are both GSM and CDMA
I'm trying to buy an iPhone 4s but was wondering if they ALL take sim cards.
My friend is offering me a CDMA iPhone but I am with T-Mobile (GSM Network).
Would I be able to use it on T-Mobile if I got the new sim card? I'm hearing mixed answers and would like to hear a straight answer.
Thank you so much!
iPhone 4S