yea i have gotten several phones from att and used the same sim card for all of them, and kept the same phone number.
Yes, you can put them in all AT&T phones and it should work, assuming that phone has a sim card slot.
all sim cards name
Yes they do
Not all cell phones are compatible with SIM cards. Some only work with a contract, and you need to unlock the phone before you can use a SIM card.
The LG LS855 is a Sprint compatible CDMA Phone that does not support SIM Cards
You must have a SIM card for the carrier you want to use and the phone must be compatible with that carrier.
yes they do all have sim cards also on a different note the t-mobile phones accepts the cingular sim cards when unlocked and vice versa
No you cannot. The Verizon SIM cards are only designed to work on international networks. Nextel also does not use a GSM network, they use iDEN and GSM SIM cards are not compatible with it.
No they will not work with AT&T. AT&T uses a GSM network that requires SIM cards and Sprint uses CDMA that does not require SIM cards. The two networks are not even remotely compatible.
SIM cards have generic sizes and basic functions. The difference lie in the frequencies that they operate on.
Verizon doesn't use SIM cards, so the Verizon iPhones presumably don't. All AT&T iPhones have a SIM card, though.
No, only Rzrs that worked on GSM networks have sim cards. Rzrs that worked on CDMA networks did not have a sim card slot.
Verizon does not use sim cards in their phones (except the iPhone). So no you would not be able to use an AT&T Sim card in a new Verizon phone. sorry.
No as they may be locked to a particular handset but if they are not you can move the SIM card to an other handset. Nokia do not have their own SIM cards they just lock the SIM card to their network via the SIM card settings.
Cellcom in Wisconsin does not have sim cards, wish they did. I have heard that you can get a sim card from them but non of their phones have a spot for sim cards.