We’ve already told you how to go about replacing the battery of your old iPhone (the full instructions are right here), and it should all be a reasonably painless experience. However ...

If your battery health is under that, then it's time to replace your battery before you begin to see permanent damage to your iPhone. If you're ready to try and replace your iPhone battery ...

For an iPhone SE, 6, 6 Plus, 6S, 6S Plus, 7, 7 Plus ... send it, have Apple replace the battery, then ship it back to you.

An curved arrow pointing right. You may have noticed your iPhone 6s or 6s Plus battery percentage is off. Some have complained that their iPhone dies even though the percentage displayed more juice.

Unsurprisingly, the iPhone 6s Plus will have a smaller battery than its predecessor, but you shouldn’t freak out, as that’s exactly the case with the iPhone 6s. A smaller battery, however ...