I have had my LG Risio for a while, and it seemed to be fine, but recently, my phone has had the issue of tapping on the bottom right corner. -It occurs across all apps and even my lock screen. -It occurs like waves; it occurs for a while before entering a period of normalcy. -Rebooting does little to nothing to help. I haven't seen this issue before, any tips/solutions, or should I get a new phone?