Can someone help me to solve this problem. I used usb debugging for restoring messages and kingaroot for rooting my android device (Coolpad note 3 lite) but i couldn't recover messages due to error. But after that my device started hanging and shutting down by itself. During startup a => root symbol comes at left upper corner each time and optimizing app occur each and every time. I have done factory reset, Now i am able to open apps but shutting down problem is there and 2nd sim slot is not detecting sim. Please help me to resolve this problem.