I got a Blackberry Peral 8110 from US and unfortunately i am unable to unlock it.Can somebody please tell me how we can unlock it. Do i need a software for it or i have to take it to the dealer to unlock it?
You could've just gotten it unlocked for free by calling your service provider in the US (AT&T/TMob). I think you can get unlock codes on ebay for a dollar or take it to a trustworthy service repair shop in your area. If you go the ebay route, you'll get a network MEP via e-mail. Enter this in to your phone by clicking Tools-> Options-> Advanced Options-> Sim Card
Type: mepp2
A hidden menu will open: Enter Network MEP Code. Enter your code, press Enter. If correct it will say something like "code accepted".