My white Z2 from M1 Compass Point I got on launch day has no gap problem. I did encounter an overheat message when I was playing different settings on the phone's camera, but I am satisfied with the auto anyway.
Some facts,
I love the long battery hours. I usually ended up with 50% or less on my S3 by 12pm. I have about 85-90% on this phone for the past week by noon. The charging speed using magnetic dock is extremely fast too.
I realized the "Double tap to wake" function demonstrated in the reviewing video don't work most of the time, especially when you are holding the phone in your hands. However, a quick 3-4 light taps on the phone using a finger or thumb work perfectly.
I hate how we can't configure what sub-folders to appear in album, I do not need Maps, Globe, Faces, Facebook, Picasa, Flickr etc but I couldn't remove them. I only managed to hide the Whatsapp folder and pictures from main album only after days of Googling...
Switching from S3, I couldn't resist tapping on the bottom right corner of the phone when I need to go back...
I won't get another somsong as I know of at least 6 cases of dead MicroSD. My S3 killed 3 of my Sandisk and one on my wife's Note 2. Although replaced FOC, its a hassle and we lost all data on the cards.
My 3 casing and 3 magnetic cable arrived from Taobao and I am just another happy owner now
PS: As an ex-UW photographing diver.... please ensure there are no lints or sand before closing the lids. Even a tiny sand or lint can compromise the water proofing.
Regards,
Billy