I received my z2 today and I also have this issue.
I have to press the power button so hard to switch on/off that my index finger is aching now. (better if I use my nail to press.)
is this a normal on z2?
Can you pls let me know if your z2's power button is hard to press? I mean when you press, no feeling of press/click.
I know I can use tap to wake, but I expect and want it to be perfect after spending so much money.
Should I send it back or live with it?
Thank you in advance.