Your phone still locked for particular network and you need to unlock your phone first before you can use your current sim card in that phone. To unlock blackberry 7290 network you will need a blackberry unlock code and can be obtained from your network provider or purchased at third party sites on internet.
Your BlackBerry need to be unlocked .
It's a full detailled guide on how to unlock your BlackBerry .
please read it carefully .
1. Insert any sim card
2. Turn off all of the wireless connections
3. Go to Options
4. Select Advanced Options
5. Select SIM Card
6. Hit menu select show keyboard (where needed)
7. Type MEPD (you will not be able to see the typed info)
8. Type MEP2
9. Now it will say enter network mep code
10. Enter Unlock Code
All done.
I suggest you by the unlock code from a fast and reliable codes seller such as blackberrymep.com .
Hi,
your phone is network locked. To unlock it you need to type MEP2 unlock code. You can buy unlock code at BlackBerry 7290 Unlock Page at FastGSM.
gsmwong
SOURCE: sim card invalid. what do i do (balck beery pearl 8100)
It's means your phone still locked for particular network, you must unlock it with blackberry pearl 8100 unlock code. To get blackberry unlock code you can purchase from third party sites on internet, please remember don't try to use free unlock code since it's can damaged your phone.
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