Last updated 06-APR-11.
Phones are designed with unlocking in mind. In fact, selling a phone in the UK that can't be unlocked is not strictly allowed by Ofcom. Having said this, not all methods used to unlock handsets achieve this in the way the manufacturers intended. As a rule of thumb, if you're typing in a series of codes to unlock your phone this is likely to be a safe method. As soon as you connect your device to a machine or software built by a third party you run the risk of changing settings deep within the phone which may affect its usability. Finally, as the case of unlocking SIMs shows, attempting this practice may involve physical damage to your SIM and your phone, rendering then unusable or in urgent need of repair/replacement. While unlocking is not illegal
, it may be dangerous!