Hello everyone! Since i bought my mate 10 lite every so often when scrolling down a page on the internet, facebook or a whatsapp conversation i get some sparks on the screen and a blue line forms where i drag my finger.... What is this? It only occurs accidentaly and if i try to replicate it it never seems to happen. Today it happened and i managed to draw a star and save a photo it seems to be a screenshot butcant find anything about it.. Please help me?!