Airtel 3g Speed Capping Solution

Try this solution for speed capping.
Activating 3gvbc zero rental plan will increase capped speed. But as i heard many users saying that they are getting this error.

Your request for 3GVBCPlan can not be processed as your current Free MB is more than 50MB. You can activate any 3G pack or plan only when your free MB balance is lower 50MB

Just put your sim in non internet mobile like 1208, 1600 etc.. And activate. It'll successfully gets activated and your 3g speed will be back.