Using cell phones for everyday tasks happens more than ever. People are even doing online banking with these all powerful cell phones. A big issue comes with all this technology. Protecting your identity falls on your shoulders.

Use a good security code to unlock that cell phone for use
Your first line of defense from would be identity thieves’ lies in a good cell phone unlock code. Many phones use a number system as their unlock code, but phone manufactures are starting to get creative with their security features. The Android OS is just one such OS that uses patterns instead of numbers for their unlock scheme.

Your unlock scheme should be unique to you. Don’t use important dates when picking a number unlock code. Make sure this cell phone unlock code does not tie into any banking information. While an unlock might make it more work to use your phone, it is the first line of defense from thieves stealing your information.
Clear out all that browsing history

Surfing the Internet on cell phones is now a commonplace activity. As phone providers figure out how to make the online experience more enjoyable, people are using the results of all that hard development work. This also means you have a bit of monthly maintenance to perform on your phone.
You want to clear out all your browsing history from time to time. You may even want to consider doing this after each web surfing session. This will help you keep thieves from pulling email passwords, banking information, or other personal info you may have entered when you were buying that rare Winnie The Pooh doll from EBay.

Logout of any services running on your phone
Cell phones are also a major player in the social media arena. Services like Facebook, Twitter, and Foursquare now run on more phones than ever before. This also means your account information is easily accessible for any thief to enjoy.

It might make it harder for you to check what Aunt Mildred did this morning, and getting Mayor of your local coffee shop on Foursquare might take a bit longer to achieve. Logging out of these services only increases your online security in the unfortunate event of a cell phone theft.
Remote erase that phone

Personal ID protecting is a growing business. This business has grown to start including services that will remotely erase your cell phone. This service usually works by you calling in, or logging on from a computer, and reporting your phone stolen. The service then sends a remote signal to erase your phone and set it back to factory default settings.

These services are not perfect. The cell phones they work with are still rather limited. A thief that is bound and determined to get your data still has ways to find it. These services also come with a small monthly fee for that ease of mind they provide.

Protecting your identity on your cell phone is becoming every bit as important as protecting your identity on the computer. This may take more work to use your phone, but it is more work if someone steals your identity and buys up a small island. Personal identity protection rests squarely on you. this information from : http://cellphones.org/blog/how-to-protect-your-identity-on-your-cell-phone/