To determine if your BlackBerry is already "unlocked" or not:
1. On your BlackBerry, go to Options > Advanced Options > Sim Card.
2. At that screen type MEPD (see note below) on your keyboard. A new menu will pop up.
* If your BlackBerry has a SureType keyboard (71xx, 81xx, 91xx devices) you will need to double-tap the P, so the actual keys entered become M E P P D.
3. Look for Network in the list.
4. If your device is "unlocked", it should say Disabled or Inactive. If it says Active, it's still locked to that carrier.
If you need instructions on how to unlock your BlackBerry for use on a
carrier other than the one to which it is branded, check out BlackBerry
Unlocks
and read this link for instructions.
Do you have a BlackBerry Data Plan enabled on your account with your carrier or mobile provider?
You must, in order to get the RIM push email functions you are looking for, as well as addtional BlackBerry data services such as the internet browser, Facebook for BlackBerry, BlackBerry Messenger, and much more.
So, call your carrier and inquire about having the BlackBerry Data Plan added to your account.
Good luck.
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3. Install free BlackBerry Protect today for backups of contacts and data.
