Yes almost with any phone !
Some cell phones are designed to use a Subscriber Identification Module (SIM) card, or microchip that stores subscriber data. The SIM card is issued by a carrier and provides cell service by activating any phone into which it is inserted. A locked phone, however, will only recognize a SIM card from a particular carrier. If the cell phone is unlocked, it will recognize a SIM card from any carrier. The "lock" is a software setting that keeps the cell phone "loyal" to one carrier.
You can buy a one touch cell phone with an unlocked sim card , trying Ebay would be your best bet .
Any cell phone that is unlocked requires a SIM card to work. If you own a Sidekick cell phone that is unlocked you are able to use a carrier other than T-Mobile. For this reason, it will require a SIM card to work.
The G'zone does not have a SIM card, nor does any other Verizon Wireless phone.
You can put any SIM card in an unlocked cell phone.
The LG Prada is an unlocked phone. The phone is a SIM card phone capable of being on any carrier that accepts SIM cards. Currently (2012) T-Mobile and AT&T are SIM card carriers.
When you rent a cell phone you have to have a credit card. There is an authorization fee which is billed immediately to your credit card and the fee is substantial. There does not seem to be any kind of checks that they do.
Any - provided the handset has been unlocked. The network your phone uses is determined by the SIM card..
No A phone card usually refers to a kind of charge card, something you pay with. A SIM-card is what gives a cell phone its number, it's identity.
No. Each carrier has allowed cell phones for their carrier. If you have a GSM carrier though, you can buy an unlocked phone to use on that carrier even if the carrier doesn't support the phone. All you do is move your sim card.
For a cell phone to be unlocked, it means that the phone is able to use any SIM card from any phone network type. For example, a locked Verizon Wireless phone would be unable to accept and function with an AT&T SIM card, whilst an unlocked Verizon Wireless phone would be able to accept and function with an AT&T SIM card.
A ton. Any gsm phone uses sims.