How to delete all my photos from my iphone for storage space

Question

my photos are taking up a large portion of the storage on my phone...i've uploaded them to my computer and now i'd like to delete them all so i have more room for music. how can i delete them for good on my phone? is there any way to delete the following albums (or at least the pictures from the albums) : events from my mac, faces from my mac, and the last 12 months album. i just want to be able to put more music on my phone but my pictures are taking up more than half of the storage! please help

Answer 1

If you've synced photos to your iPhone through iTunes, change your sync settings in iTunes to not sync any photos and apply the change.
That will remove all synced photos, but not photos that you've taken with your iPhone's camera -- for those if you've imported them to your computer then to remove them you have to delete them one by one from the iPhone, or use your computer (assuming you have a Mac, iPhoto should allow you to select and delete what's stored on the iPhone, except for synced photos via iTunes).
Then there's iCloud photos.  iCloud only holds the last 30 days of photos, but your device will continue to hold them up to the 1000 photo limit, regardless of how old they are.  To reduce these, you can delete one by one, or if you Restore your iPhone that will strip off all iCloud photos, and add back only the last 30 days of iCloud photos, assuming you leave the Photo Stream setting ON in iCloud settings.