Thats because Stamina mode kicking in and disabling all data network towards those said apps. Like mentioned, try removing the exclusions and restart the phone before putting the exclusions back it. If it still doesn't work, you have to hard reset the phone then.

Thanks mate!

Another problem is, not too sure if this is a Sony problem or an Android problem, but after viewing a contact and when I go back, I actually expect the screen to stay at where I was instead of going back to the top of the contact list.

Unless if you are not making calls, because I find this call function is easy more better than NC earphones.
I tested one for a forumer. I don't want to disclose who is it, but it's guaranteed it's a prefect waterproof unit.

Splash ? Ask @raymondtong94 do dunk test for you

but z3 touch screen will be useless under water .. how to browse the phone ?

eh...Astro On The Go not supported in Z3?
try to download from the app store but said not compatible wor....

guys need help. my notification is damn soft, previously on z2 have the xloud however i can't find this function now... 

i do wash my phone when it gets too dirty or too heaty, Z1 time

sometimes i washed my phone if screen become dirty...lol..