There are several ways you can sort your images on the Photobucket mobile site. By default, all your images are sorted by Date Uploaded: Newest.
To change the sort order for the images in your account, tap on the three descending lines 
below the toolbar.
You can sort your images as follows:
- Date Taken: Newest to Oldest
- Date Taken: Oldest to Newest
- Date Uploaded: Newest to Oldest
- Date Uploaded: Oldest to Newest
- A to Z (Alphabetical by filename)
- Z to A (Reverse Alphabetical by filename)
