Wouldn't it be wonderful to be able to select your own network and use your mobile with any compatible Sim Card? Many of you might be surprised to know that that is very much possible. There is something called SIM Unlock. What you do is SIM unlock your mobile phone to make it compatible with other service networks to take advantage of great deals, better tariff plans and cheaper roaming facilities. Besides, a ‘SIM Unlock'ed mobile will have a higher resale value too!