My Asus zenfone 5 didnt function right after it turned 1 year from date of purchase. I am impressed by the screen, no scratches.
However the battery is the number 1 problem I encountered until the unit was crashed. it got drained so easily, when playing games or using mobile data.
Unit HEATS UP as well. I need to disconnect from Wi-Fi or mobile data as it sometimes auto-shuts off because of the heat. before it ended its life, the unit was only hanging up, delayed response and unable to boot up immediately. Somehow, I appreciate that I enjoyed the unit in a year:)