I had two, both were fucked. Z2 and then the latest one. Screen issues. Owned a Z2 for a while but the screen got ridiculously sensitive and just spazzed out all the time. Was looking for a new phone last year or something and saw the Z3 or Z4, whatever it was then. Figured I'd be fine, my Z2 issue must have been a one off. Bought the new one, played in store all good, few hours later the fucking screen bullshit had started again, dunno wtf is up with them. Either I'm super unlucky, have some weird finger issue, or the screens have issues.