In need of master security code or puk code for blackberry curve 8310

SOURCE: Invalid SIM card

Go to your provider and ask for a new sims card. They should give you one free of charge. This corrected the same problem for me.

SOURCE: I need PUK code for Blackberry Curve

You can get the puk code by calling your phone service provider, the phone doesn't have a puk code, if you change the sim card it wont ask for the puk.

SOURCE: BB curve 8310 lost all addresses from address book Says NO ADDRESSES"BB curve 8310 lost all addresses from address book Says NO ADDRESSES"

do you have a sim card. If so you can take it to ATT and see if they can retrieve the old addresses.

SOURCE: I have the 8310 but service with T-Mobile.

There are different operating systems for the myfaves and non-myfaves phones. You can check crackberry.com's forums to see if the operating systems are interchangeable.

SOURCE: blackberry curve 8310

if your phone is user password locked you can enter the WRONG password ten times and it will reset itself but this will also erase all data. if you need the unlock code so it can be used with other carriers like tmobile you can call att at 1800-331-0500 choose to speak to an operator and ask them if they can provide you with the unlock code you will need to have the imei # and they will help you for FREE.