Do you touch touch screen with sharp objects ,and keep screen clean,Never use the pen when it is damaged ,so that it will not damage screen. it is normal if the screen startup.

• 请不要用锐利物品碰触摸屏；并保持触屏笔清洁.；当笔头损坏时请勿使用；以免损坏屏幕；气温较低时；触摸屏反映速度变慢；属于正常现象