Q: how do i remove all photos from my iphone 5?

1. Open the Photos app.
2. Tap the photo or video that you want to delete.
3. Tap > Delete Photo.

Delete multiple photos

1. Open the Photos app and tap Select.
2. Tap each photo or video that you want to delete.
3. Tap > Delete Photos.

Delete photos on your iPhone, iPad, and iPod touch - Apple Support

There is no way to delete all photos at once.

dodge450x wrote:

 

mass delete, not 1 at a time.

Restore your phone as new.