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BlackBerry® OS Smartphones

New Member
Posts: 1
Registered: ‎07-11-2013
My Device: Z10
My Carrier: mtn

sim not allowed #mm 3,

I am hoping someone can help me as i have a very serious problem.

i bought myself the blackberry Z10 in Dubai while on holiday. i bought it at Dubai Mall in a shop called Eros digital.


i came back to south africa and got an mtn sim card for it. from day one the phone would kick out my sim card. it would show the sim card icon in the top right hand corner with an exclamation martk.

i would need to reboot the phone to get it to work. this hapens every 2 or 3 mintues now.

i tried to use a different sim card but the same thing happened.

i took it to Blackberry at vodaworld and Berry fix but both say they cant fix it.


someone told me its network locked, so a gjuy from Blackberry said he could help unlock it, when i took it in he told me it wasnt locked.


the erro message i get when the sim gets kicked out is "sim not allowed #mm3"

can anyone tell me what this mean and how i can fix it aotherwise i wasted all this money buying a phone that doesnt work and i wont be going back to Dubai anytime soon.


Please help urgently

Forums Advisor III
Posts: 1,392
Registered: ‎03-29-2012
My Device: BlackBerry Z10 OS Leaked | STL100-2
My Carrier: Globe Telecom

Re: sim not allowed #mm 3,

Your BlackBerry is locked. Try using another SIM.


Go to your SIM Card Options, follow these steps:


BlackBerry® 6 to 7.1

1. On the Home screen or in a folder, select “Options”
2. Select “Device” followed by “Advanced System Settings”
3. Select “SIM Card”

4. Type MEPD


BlackBerry® Device Software 4 to 5

1. On the Home screen or in a folder, select “Options”
2. Select “Advanced Option” followed by “SIM Card”
3. Type MEPD


And tell me if they are all Disabled.




Good luck!

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New Member
Posts: 1
Registered: ‎09-03-2013
My Device: 8520
My Carrier: Vodafone

Re: sim not allowed #mm 3,

Hey, I had the same problem as the original poster, and I tried what you said. They are all disabled. What should I do?

New Member
Posts: 9
Registered: ‎04-05-2015
My Device: Torch 9810
My Carrier: Torch 9810

Re: sim not allowed #mm 3,

I have also tried this trick. You have to insert a SIM card in any other carrier and after getting signal in that Carrier. You can also get Signals in your own BB Device.
I hope it will helpful to you .......