Invalide sim card for my blackberry 7290 - RIM BlackBerry 7290

Your question is not clear. Is this BlackBerry a regular using one or a new one. Did you try inserting different SIM to it. Does the same message gets displayed for all the SIM.
I think your mobile must be locked to any particular network. That is why it displays invalid SIM when any new network SIM is inserted in it.
You must find out to which network has your mobile been locked to. Then get the unlock code from www.Mobileunlocksolutions.com . You need not worry about the unlocking process. You can get the complete unlocking instructions from www.Mobileunlockguide.com for free.

It's normal since your phone still locked for particular network. To unlock blackberry 7290 network you will be need a blackberry unlock code and you can obtained that code from your network provider or purchased at third parties sites.

Hi,

I am quite late in helping you but my information might help you in the future. If you want to unlock your blackberry, then I would recommend you Blackberry unlocking codes with IMEI. They are very reliable, CHEAPEST and provide good customer support service. Good luck!

hi
i too use the same phone Blackberry 7290 but i can give my unlock code just like that
because its unique ....... to every phone so visit the official site and get unlock code at some cost
click here

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

You need to get it unlocked either by doing a search for unlocking blackberry 7290 and paying one of the online services.

Service providers will unlock their phones as well just tell them your traveling abroad and you need to unlock the phone. Otherwise if it is not affiliated with a service provider you will most likely have to pay someone to get you unlock code.

You have to unlock your blackberry, in order to do so, visit http://blackberrymep.com and get your unlock code with instructions to unlock, it's fast and rapid, you will get your blackberry unlocked in five minutes .

If it is set for one service supplier it should work on that sim - I suspect its locked on another supplier - question the seller on ebay - if he is ingenuine you can always leave bad feedback.

Please rate this assistance - I hope it is useful.

Here is a great forum for blackberry - lots of info:

blackberry forum

Please rate my assistance I hope it is useful.

Blackberry Technical Support team on the WEB is place to seek an answer. Or any documentation that came with the device From what you say- and I am not an expert with CellPhone devices/Systems- there appears to be no service available in your part of the world. Check out Blackberry