1. Identify the primary space suckers
Apple conveniently maps out just how much storage each app on your phone is consuming. Check out your stats in Settings > General > Usage, and then click Manage Storage. You can then start making cuts on the biggest culprits.
2. Delete apps you don’t use that often
And even if that game you downloaded two years ago only uses a few KB, cut it loose. Every little bit counts. If it’s not an app that you use at least weekly, take it off your phone, and download it again from the Cloud when you need it.