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AT&T Blackberry 8310 Unlock Instructions This models also works on: Blackberry 8300, 8310, 8320, 8700c, 8700r, 8700f, 8700g, 8707g, 8707h, 8707v, 8800, 8820, 9000 Bold, Storm or Curve 1. You must have an original SIM card in your phone to complete these steps (can be active or inactive with the network) 2. Goto Setting Menu 3. Goto Options Menu 4. Go to advanced options 5. Go to sim card 6. Type MEPD using your Blackberry 8310 keyboard (NOTE: You will not see any text appear on the screen while typing MEPD) 7. Type MEP[Alt + 2] ( M E P, Then type Alt key, then 2 ) 8. You should be presented with a prompt "Enter Network MEP Code". 9. Type in the unlock code (You get the code at – AT&T Blackberry 8310 Unlock Code) 10. Your phone is now unlocked Get AT&T Blackberry 8310 Unlock Code