It's easy to replace your iPhone's battery and it can give your phone a brand new lease on life.

Apple offers in-store battery replacement for $99 for the newest iPhone 15 models, which drops down to a minimum of $69 for the oldest iPhone SE and iPhone 5 models the company still supports.

EVEN if your iPhone is out of charge, it's still plenty powerful. There are a few clever iPhone features that still work even when you've run the battery ... on the iPhone 11 and later, and ...