how do unlocked cell phones work?
An unlocked phone is one that you can use on your provider’s network simply by inserting your SIM card. If you get service from AT&T or T-Mobile, you will be provided with a SIM card that uniquely identifies you as a subscriber. SIM cards also have some storage capacity for frequently-dialed numbers and some settings. Not all phones are SIM capable. Sprint phones, which do not use GSM, do not have them. You can shop for unlocked GSM phones online, including places like amazon.com, and optionally buy a service plan along with them, or just buy the phone and get your service from the provider of your choice. http://www.amazon.com/cell-phones-service-plans-accessories/b/ref=sv_e_5?ie=UTF8&node=301185 They are not necessarily more expensive than the phones you can buy from a cellular service provider; in fact, buying an unlocked phone is an excellent way to upgrade with
Hi unlocked cell phone is free to all network sim in it in all countries.If it GSM phone then if it unlocked it accept other GSM network sim in it.If it locked to CDMA network then after unlocked it accept all other CDMA network sim in it .I here by list soem advantages of unlocking cell phone
You can use your phone with any network operator
You save on the cost of roaming
You increase the resale value of your mobile
Change operator without having to buy another phone
If you want to unlock your phone from network lock then visit ClassicUnlocking.com here they help you unlock your phone using network unlock code.
Unlocked cell phones means you can use other carriers phones or generic phones on your network. For example, an unlocked ATT phone can be used on the T-mobile network, you just throw in your SIM card. So you do need some sort of agreement with some cell phone company, which usually means a 2 year contract with a monthly bill. Att and T-mobile use the same sort of network, GSM. This process doesnt work with the other kind of network, CDMA (Verizon, Spring, Alltell, etc). These networks do not have SIM cards.
Most wireless providers lock in the phones they sell so you can only use them on their own network. An unlocked phone will work on any network after you insert your own sim card (from your old phone). Buying an unlocked phone enables you to get a much nicer phone, but you will most often pay full price for it.
