How can I delete all images from iPhone?

Only thing i can think of is doing it manually by going into your Photos > Camera Roll or Photo Library > Edit > Select each photo you want to delete individually, and hit Delete.

 

What I do to remove photos on my phone is this: Disable auto-sync like you did. (Manually sync photos.) Then I created a folder in iPhoto called "to iPhone". (You can name it what you like.)

When I want to move photos to the phone I copy them to that folder then sync with the phone choosing only that folder to sync.

To remove them from the phone, I remove any photos from the "to iPhone" folder in iPhoto, leaving it empty. Then sync the phone choosing only that folder to sync. The photos are then removed from my phone.

Works for me, hope that helps.

 

thats exactly what I do. I just figured I was the only one not smart enought to do it the right way!! glad im not alone lol

 

And here's me thinking that WAS the right way!

There's power in numbers. That's why the idiots rule the world...