iPhones need a SIM card to work as a phone. If you don't have a SIM card you can use it as an iTouch.
Verizon doesn't use SIM cards, so the Verizon iPhones presumably don't. All AT&T iPhones have a SIM card, though.
all you have to is put your sim card into it and wait a few seconds and it will read your sim card.
Yes you can ring on any sort of Iphones. But only if they have signal and a sim card inserted.
well...the iPhone will work but not the SIM card..
Yes, iPhones use a normal sim card.
all iphones have a sim slot but on the original iphone the customer cannot easily access it whereas the 3G iphone has the sim card and a sim card ejector tool How can I access my verizon iphone 4 sim card slot that doesn't have a sim tray
No...Well not any of which i know of... Sprint is CDMA The network with out a sim card .So is Verison, Boost, Metro, and, Cricket.
Yes. AT&T is a GSM carrier, meaning all the phones are GSM phones, meaning all the phones require a SIM card to work on a GSM network.
Zum Aktivieren des iPhones gültige SIM-Karte ohne PIN-Schutz einlegen. Insert valid SIM card without PIN protection before activating the iPhone.
what should happen is nothing at all your memory is suppose to be stored internally into your iPhones memory witch is a memory chip that can not be upgraded unless the phone itself is exchanged only memory that can be updated is when you free up your memory but point is the sim card does not change your memory in a iPhone.
no they are not