[Update] This is a possible fix for the dedicated camera button as below:
1-The symptoms i had before:
this is my second month with my 4th Xperia Z2, as the last 3 had all possible defects you can ever imagine, anyway, i recently noticed that the dedicated camera button has some sort of a problem, it launches the camera app perfectly then it doesn't respond at all, i keep pressing it like crazy with no luck to capture the shot.
the weird thing is it works perfectly with any other camera app from the market, and it sometimes works with the official camera app after like 1 minute of waiting or maybe randomly, i don't really know, then after i capture the photo it stops responding again for a minute or so.
what do you think guys?
i'm on .314 FW
tried a factory reset, tried uninstalling all other 3rd party camera apps with no luck
2- The Fix
i've tried removing all 3rd party camera apps with no luck, tried the factory reset and then the PC Companion repair with no luck as well.
googled it but no one is talking about it, even here, i didn't find a real fix which made me really nervous about it as this is my 4th Z2, here is what i did.
A- I pressed it very hard for like 10 times as i was really nervous coz there are no fix
B- while pressing and releasing i felt that sometimes it get released for the 2 clicks, the shutter click then the focus click
C- I started sensing when it get released for just the shutter click then stopes and when it get released for the 2 clicks
D- bought an AKAI electronic spray and sprayed the button several times while keep pressing and releasing it hundreds of times till it stopped the faulty 1 release and it became most of the times releasing the 2 clicks
3- The conclusion:
when the official app launches while the focus click not released the button will not function at all, and when it launches while the 2 clicks are released everything will be perfect
Hope this help you folks as i'm sure there will be lots of you guys with this problem without a fix for it (as most of Xperia Z2 devices has their defects) for me only I've replaced 3 devices and this is the 4th one