Apparently, I just got an iPhone 4S for AT&T without contract and not unlocked. I notice that my T-Mobile SIM card is too big for the iPhone SIM card slot, but I'm pretty sure you can cut it to a good size and yet it may be risky. My plan for T-Mobile is the Pre-Paid plan; it has minutes and balance on my phone. I paid a hundred dollars for 1000 minutes and text messages, 3G disabled on my HTC MyTouch 3G device. I want to unlock my iPhone 4S but I don't want to jailbreak it. My oldest sister told me that when she placed her AT&T SIM card on the iPhone 3GS, AT&T automatically charge you monthly for the data plan even though if cellular data's turned off. She also told me that unlocked iPhones are iPhones that are capable for any SIM cards. So my questions are:
1.) Do you guys think my SIM card will be broken if I try cutting it to a smaller size?
2.) If my SIM card breaks, is there a way for me to obtain another SIM card (For T-Mobile) with the SAME PHONE NUMBER, CONTACTS, and PREPAID PLAN? If yes, how much will I need to pay?
3.) Will T-Mobile automatically charge me for data plan if I insert my SIM card to my iPhone 4S?
4.) Do I need to jailbreak my iPhone 4S in order to unlock it? Anyway to unlock it without the jailbreak process?
5.) Any warnings? Tips that I should be aware of before desiring to do this on my own risk?