What do I delete to free up Storage on my iPhone?

What do I delete to free up Storage on my iPhone?

Any apps you have but never use, music you don't listen to anymore, clearing your history helps a little bit.

Anything you want. Unwanted photos, songs you rarely listen to, or apps you never use. If its jailbroken, delete tweeks you don't need.

You can try double clicking on the circle button on the phone and when the apps show up at the bottom just hold your finger on them and delete all of those. You can also upload all of your photos to your computer and then delete them on your iPhone (that i know will free up loads of storage if you are i big photo taker).