How to delete everything off iphone?

If that still doesn't work, connect the iPhone to your computer and restore it. Note that in restoring it will be upgraded to iOS 7, so if you have Find My iPhone set up in the iPhone, turn that off first. Regards. read more

Before you can erase an iPhone, you have to turn off Find My iPhone, if you have it enabled. Open the Settings app, go to the iCloud settings, tap Find My iPhone and switch the feature off. read more

Select all photos and then click Import All. In iPhoto, choose to "delete photos from your iPhone" after importing. In Image Capture, if the "Delete Items After Downloading" option no longer appears, try this: turn off "Photos" in iCloud on your Mac and iPhone, then restart both devices, and you should see the delete button. Turn iMessage off. read more