Why are mobile phones locked in the first place?
Mobile phone companies claim that the mobile phones that they sell to consumers are heavily subsidised and that they are only able to recoup profits by the consumer using the phone on their network and spending money on calls, texts, mobile Internet, etc. Therefore, to make it more difficult for consumers to purchase a subsidised phone and then use it on a cheaper tariff such as a sim only deal, the networks choose to lock the phone so it will only work on their network. However, it is very easy to unlock the phone if need be.
