Motorola Solutions — Notification bar often popping down for every second.

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600047

I bought Moto G 3rd gen two months back.Initially it was working fine. Later i facind issue as in the below link https://www.youtube.com/watch?v=pk1f0ESQiPo Notification bar often popping down for every second Sometimes when i unlock phone using power button, sometimes touch not working. Again i need to lock and unlock my device. Kindly suggest what is the issue causing this.