Everybody has observed that iOS 7 was the biggest jump and improvement since the advent of iOS itself. It fixed a lot of issues and bought features the consumers had been begging Apple for a long time. Features such as Control Center, Dynamic Wallpapers, Enhanced Multitasking etc have been demands that have been finally answered. However, as much as iOS 7 has aced things, there are always things we seem to uncover which its previous versions did better.
One such example is the ability to delete all pictures in your photo gallery at once. On iOS 6, you could simply go to Settings-> General-> Usage->Photos and get rid of every image there is on device, things on iOS 7 and above are a bit more tedious. You have to manually select every image from your gallery and only then press the delete button to get rid. This can be a real pain if you have around 1,000 plus pictures which most of us anyway do.
If you have faced this issue too, here is a quick work around:
Go into the Photos app on your iPhone from the springboard.
Click on Photos tab at the bottom left of the Photo Gallery
This will open the Moments of your device which basically aggregates the images based on the dates you clicked the images on.
Find the Select Tab on the top and select the moments you wish to quickly erase. Once you have find the bin icon at the bottom right of the screen and just get rid of the images.
A word of caution though, that unless you have the images backed up, there is no way for you to bring the deleted images back. So, before you press that delete icon, make sure you have the important stuff backed up and that you do not end up regretting moving things out of the memory too fast.