Hello,
When you place a new or a existing SIM card from another phone provider into a different cell phone and it asks for a Security Code then :-
This phone is locked to the original mobile phone provider. You need to contact this mobile provider to ask for the unlock code (Security Code) for this phone. You need to provide proof of ownership etc and the phone's unique IMEI number which is located inside the phone under the battery. They use this number to generate the unlock code for your phone.
They should provide you with instructions on how to enter this code into the phone.
Once you unlock the phone, then you can insert a new SIM card in this phone or sign up with another phone provider using this phone.
You can unlock from two free side or paid side from bellow the link
FREE SItE
http://www.mobileunlockguide.com/mobile-phone/http://www.unlock-free.com/PAID SITE
http://www.unlock-zone.com/http://www.mobileunlockstore.com/?gclid=CKDb2_y2558CFSlJagodxBkDHwHope it will help you.
Please Read all the instruction before start .
I have a Benq-Siemens JA SB1A A38 locked by Aircel, IMEI 351810010327945
i want to unlock my sim of benq-siemens mobile model JASB1A A38 locked by Aircel having IMEI 351810010956354
sim lock
i want to unlock sim code of benq siemen model HERB 1A having IMEI354287011504615
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