Samsung's Galaxy smartphones allow you to protect your personal information by locking your SIM card with a PIN. While you should choose your code with care, you always have the option to change your ...

Businesses that provide employees with cell phones may want to reduce costs by limiting the phone numbers the employees can call. The Samsung SGH-T619 has a Fixed Dial Number, or FDN mode, which ...

It may be useful to change the PIN code of a newly purchased iPhone (if the PIN is set to 0000 by default for example) or for safety reasons to protect from fraudulent use of your phone in case of ...