The original 2G iphone was IMSI locked therefore you could only use one sim with the phone. Newer Iphones 3G and 3GS are usually just carrier locked so you can swap around SIMs including MVNO SIMs that operate thru the same provider. All Iphones from Belgium/Italy or New Zealand are completely unlocked. Some carriers will unlock your IMEI so that when you update the phone on iTunes the phone will be unlocked expect to incur a charge or to be out of contract to get this!
AnswerNo. A SIM activated in a non-iPhone will not work in an iPhone.
The iPhone must be used with the built-in SIM card that was activated in it initially (or the activated SIM from an identical model iPhone), although that SIM can be moved to another SIM-based phone if necessary.
Yes. That is the only thing that makes AT&T's network worth it in the end.
No.iPhones accept only unused simcards. If you put a used sim in your iPhone, it will crash.
if both phones are unlocked, you can!
Yes, iPhones use a normal sim card.
No
No sim cards are only for numbers
There are some iphones that do have dual sim cards.
The iPhone uses the micro SIM card
Yes it can be swapped. I actually swapped my razr's sim card to my iphone. Nothing happened. It works perfectly.
Iphone uses sim cards to track the user and gets all hidden information from them
no it can notwell... TECHNICALLY it can. but only to 3G at&t cell phones. the sim has a unique shape. and one of the MAIn reasons that the iPhone sim card cant be transferred to a non iPhone in some cases... is because the sim card compartment requires a tool to unlock it and take out the sim card. :O it comes with the phone though. but i think you can only transfer the sim from the iPHone 3gSSSSSS cuz it has the actual card in it. the others dont... idk why. :P
Buy a SIM Card from AT&T or T-Mobile called a Micro-SIM. These will fit in the iPhone. Apple is planning on using Nano-SIM Cards which are even smaller.
Yes all iPhone have SIM cards although they are called micro sims (the gold chip only)
Sprint doesn't use SIM cards...
Supposedly the 1st gen with fw 2.1 does (Vodafone 2v1 sim)