I dont know what to call it

I turned screen off while in survival mode and back on tapped maybe 8 times as if placing block game freaked out sreen changed to black and white with prism shapes on screen steve was auto walking to random location i didnt press anything he stopped when he reached a platform he cant jump up on screen was still different colored item in hand showed sort of like a fan in left hand i thought my world was ruined so i quit went vack to get screenshot got killed by zombie so i couldnt the sky was black and white i was able to see though floors i wish it saved unfortunately went back to normal when zombie killed me screenshot before death im using a Lg LEON Lte no mods