
For example,Ī certain network carrier sells a brand new high-end phone for minimum cash out.

These restriction is being done on phones that are purchased under contracts. The main reason why some phones are being locked is to ensure that the consumer will not change his or her network provider. Network or carrier lock is a restriction that network carriers embed in the system of mobile phones. There may be deep reasons why these network carriers lock phones.

Before going on with the different techniques in unlocking network locked phones, we must first know why some phones are being locked by network carriers.
