Question about RIM BlackBerry Curve 8310 Smartphone

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My cell phone says invalid sim card - RIM BlackBerry Curve 8310 Smartphone

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  • RIM Expert
  • 437 Answers

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 .

Posted on Aug 03, 2010

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  • Master
  • 2,360 Answers

Try unlocking sites

Posted on Jan 28, 2011

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Posted on Jan 02, 2017

SOURCE: Invalid sim

1. (easyer way) When I got my Blackberry, I had to put it in a couple of times for it to work.

2. Buy a new sim card.
If this does not work, then check to see if it is unlocked.

Posted on Feb 05, 2010

  • 1487 Answers

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.

Posted on Oct 17, 2011

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1 Answer

Invalid sim


What is phone brand and model?If the phone displays invalid sim card in screen it is locked to network,you need to unlock it.After unlock it you can use with any GSM network sim card in the phone.Without unlocking if you use other network sim card in the phone it will display invalid sim on screen.To get unlock code for GSM network locked phones visit the site Theunlockspot.com for iphones you can get remote unlocking service in the same site itself and unlock easily.

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If the Nokia X6 16GB phone,displays invalid sim card message on the screen it is locked to some network.Please find out the network and country it is locked now.If it is locked to network,it will not accept other network sim card.But you saying it is accepting other networks sim card.How many network sim card have tried inserting in it?If you tried only one network sim card and it accepted that it is locked to that network.You can also try using some other network sim card.If it displays invalid sim message again.It is under network lock.To unlock it use unlock code.Visit the site Wickedunlock.com get code and unlock it easily.

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If you have an invalid sim card you will have to go to your cell phone providors and they will give you a new sim card. It is a pretty simple and easy fix :).

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If your phone show Invalid SIM it means the SIM card is corrupted you will have to change the SIM card.There is no other option.

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