Fact 1 — this post has nothing to do with cameras!
Fact 2 — the subject of this post is always at the back of every cellphone user’s mind
So, with the above as footnote, here is what you need to do to eke out the use of your iPhone for as long as possible…like me, I’m sure your phone has conked out at the very time you need it most!
1 Turn down the brightness level when you can.
2 If you need even more juice, shut off wireless connections such as Bluetooth and Wi-Fi.
3 We were always told to discharge your battery all the way every time you used it. That went away in the 1990s, when we started using lithium-ion. Even so, it’s still a good idea to exercise a battery once a month: Run it until the device turns off, and then charge it until full. That will keep it charging up to capacity.
4 Kill background app updates.
The last thing you need when your battery life is hanging on for dear life is some random photo app you downloaded three months ago sucking the life out of your phone while it updates.
Turn it off by going to Settings → iTunes & App Store. Scroll down, and under a section called Automatic Downloads you’ll see Updates. Turn that off. But, remember, this means you’ll need to either update your apps manually or remember to turn this feature on again when you’re at a full charge.
5 Switch off wi-fi, Bluetooth and location services, until such a time when you really need them.
These are a few of the most draining functions that kill battery life…for more tips, click here