yes
A sim free mobile is a mobile phone that can be bought which is unlocked to any network. i.e: can be used on any network, and not specifically one eg; o2. ~ AshJordan
they are called SIM free Phones
The short answer is no. Boost's newer iDEN phones do use a SIM card that can be used in GSM devices for international roaming but they will not work in GSM devices in the US. Most iDEN phones are not compatible with GSM networks, and GSM phones are not compatible with iDEN networks.
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.
Boost mobile sim cards will only work with boost mobile on the nextel network nextel is a iden network standalone that will not roam on gsm networks because nextel is a iden network
There are many mobile phones that do not require a SIM card, it depends on the service provider. Any phones from Sprint and Verizon do not use SIM cards.
A SIM free phone is one that does not have a SIM card included with the phone. This type of phone may not be able to be used with all networks. Some networks require a SIM card.
Samsung SIM free handsents can be purchased from your local resellers that offer SIM free phones. The most famous company in the UK is Phones4u. However, you can also try to buy it online as eBay and Amazon offer SIM free phones as well.
Some mobile phones use SIM cards, other don't. The phones with SIM card slot allow the user to change the SIM; this way you can change the telephone number, or you can log to different networks (providers). SIM cards have not any alternative solutions.
Because Boost does not use a GSM network, they use iDEN. Boost phones use a SIM card that is compatible with GSM phones for overseas roaming. However, iDEN is a very different standard from GSM. Most iDEN phones are not compatible with GSM networks, and GSM phones are not compatible with iDEN networks.
No
"Yes. All phones need a SIM card, or it will not function." Actually, that answer is incredibly wrong. SOME phones use SIM cards. Some phones don't. A phone on the Verizon, Alltel, or Sprint networks do not use SIM cards as they operate on CDMA platforms. iDEN (an ancient Nextel system) or the global standard GSM (AT&T) use SIM cards.