How to Unlock Any T-Mobile Sidekick 4G Using an Unlock Code

This video provides instructions on how to unlock any T-Mobile Sidekick 4G using an unlock code. Need more help? For instructions, support, and Sidekick unlock codes, visit http://www.cellunlockcode.com Why do I need to unlock my cellphone? Your T-Mobile Sidekick 4G comes locked to the carrier that sold you the phone. For example, if you bought your cellphone from AT&T, it will only work with AT&T, and will give you an error as soon as you try inserting a simcard from another carrier. Unlocking your phone will disable the lock and allow you to use your cellphone with any GSM carrier worldwide, such as T-mobile, Cingular AT&T, Rogers, Fido, and more.