How i can unlock my device?

Hello Rakshita. To unlock your phone have a look at this article http://bit.ly/1MsrvwZ . If that doesn't help then please click on the following link http://bit.ly/1EC8H4H and fill out your details, select as android then the name of AVG Program that you installed in your mobile and in description explain about your issue completely and finally click on Email option. Our AVG mobile team will reply back to you via email with a resolution.

Hey, I have changed my sim card and then my device get locked but I have forgotten my AntiTheft password and there is no  active data connection on my cell phone. And then I changed my Antitheft password through web on my tab. But still not working on my phone. What can I do now to unlock my device?

Hello Rakshita. To unlock your phone have a look at this article http://bit.ly/1MsrvwZ . If that doesn't help then please click on the following link http://bit.ly/1EC8H4H and fill out your details, select as android then the name of AVG Program that you installed in your mobile and in description explain about your issue completely and finally click on Email option. Our AVG mobile team will reply back to you via email with a resolution.