How can I see what’s taking up space? First, you’ll need to figure out where all those precious gigabytes on your iPhone are being used. Open the Settings app, tap General and then tap iPhone ...

Cache is all the data your phone stores locally, but over time it can build up and slow down (or even overheat) your phone.

Your old iPhone will never feel older than when you open a fresh one out of the box. To get the party started, you might be tempted to wipe your old phone right away and box it up for your trade ...