Sony Xperia STAMINA mode disables your chat notifications? Here's how to fix this
6

However, many users may choose to steer clear of STAMINA mode for one simple reason – the battery-saving option cuts background processes and Internet access in such a way that push notifications don't come through when the phone's screen is off. This basically means that the user is unreachable over chat or email, unless they manually check their phone often.
Well, there's a very easy fix in STAMINA mode's settings, which allows you to add your favorite apps to a “white list” of sorts, making sure you can get the best of both worlds – excellent standby time, and all your chat notifications arriving in a timely manner. Check out the slideshow below for detailed instructions, and a bonus STAMINA mode tip!
Things that are NOT allowed: