For anyone struggling for battery life, this may help…
One of the worst notifications you can see throughout the day is the warning for 20% battery remaining, especially when you don't have a charger close to hand.
It's a common problem with iPhone users as your phone can casually decide that your 60% charged battery has done enough work for today and casually decide to pack in for the day.
This is especially true with older iPhones..
With the introduction of iOS 9 a while back, Apple introduced a new feature alongside Low Power Mode which aims to prolong your battery life known as "Facedown Detection."
It's fairly straightforward, although we're sure there's some wizards at work within the phone itself to make it simple, if you leave your phone face down, the screen will no longer light up for notifications, saving you battery throughout the day.