Due to software locks and how the phones are delivered for each network, Virgin Mobile customers can not use Sprint devices in a Virgin service. The lock is to ensure that the phone can not be used in another network of the operator, another software code is set to unlock the device. But as people get more aware of the benefits and more eager to buy them, more and more manufacturers are offering their phones in an unlocked way. However, if you live in another country or are willing to be rebel and do not comply with a law that everyone agrees, they should change, you can often unlock mobile phones without your permission. I was nervous because it was a cheaper quality The tablet was because it was a cheaper price, but it was actually a great tablet and I would still enjoy it if I did not break the screen in one way or another. Most CDMA network operators will not use card-enabled phones from 2012. Instead, the subscriber information is stored in the memory of the mobile phone, which means that it can not be transferred to another phone. Best New Unlocked Phones here. People do not have to wait until a contract expires to buy a new phone. You can remove the Subscriber Identification Module (SIM) card from an existing phone and insert it into a new card when you are ready for exchange. Also, as the phones are encoded by them, they must have problems with the phone and send them a phone as soon as they have the phone. To cut a long story short, Sprint customers whose phones are not brand new (sold after February 11, 2015) are likely to have problems with it, but everyone else is probably okay. This is contrary to how you can call Cingular and give them an unlock code so you can travel abroad and use your GSM phone with another SIM card.