I recently googled “what does Android Power Saving Mode do ?”. There didn’t seem to be many clear answers, in fact the question could mean a few things. So for clarity I mean, what effect does Power Saving Mode have on the applications & services on my device.
It turns out that the Power Saving Mode is in fact a device feature and not part of Android, so I looked a bit closer at my A5 and found the answer.
Simply swipe down on the device to reveal the notification bar, then find press and hold on the Power Saving Mode Quick Connect button.
You will be presented with the Power Saving Mode page. Selecting Restrict Performance will give you even more details and options to tweak the setting as you wish. Very cool.
Restricting Background Data is quite extreme and would probably mean I would not get notifications for things like my email, until I check my phone. So I have that option switched off.