I have a BlackBerry handheld 6230 wich is unlocked.I have 2 sims on different providers. When I've tried to swich them, at the begining the terminal worked, but after a wile, the message "No service" appeared and the phone stoped reciving the network. I have tried to swich back the sim but nothing.
SOURCE: Blackberry 6230 unlock code
Contact your seller, they should give you this code, there number should be located on their website
SOURCE: RIM BlackBerry 7290 network problem
James
This seems to be the multimillion dollar question for Blackberrys and here is how this works.
There is no "magical"code for all BB's
Each Blackberry is item specific based on your IMEI which is located on the inside of your battery compartment.
Your best bet is to go to eBay or similiar and find your blackberry and look for the cheapest unlocking program. AT that point you will be able open your Blackberry.
SOURCE: I bought an unlocked blackberry 7290 RIM, can't get service
I am actually unsure what could have caused this. It might not be unlocked correctly or could have been damaged when the software was modified. But T-Mobile carried the BB7290 so if you can get ahold of the person who unlocked it for you I would ask for a branded T-Mobile phone.
SOURCE: Blackberry 7290 No Service
I think one just have to turn on the radiosignal by going through settings than status, click the truck wheel to enable the radio signal. Check if it catches the signal or not
SOURCE: Blackberry 7730
You can check status of your phone maybe its network unlock
this site will help you a lot
http://www.blackberryimeiunlockcodes.com
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