Until now, the only way to upload multiple photos to Facebook with mobile was using a third-party app, or the official Facebook Camera app on iOS, which were both very cumbersome.
With the latest update, iSO version 5.0, Facebook users can now upload multiple photos at the same time. When uploading a photo, users simply need to select the first photo, then tap on the camera icon or the photo’s thumbnail to select another photo.
This is a welcome addition to the Facebook app. It was always inconvenient to upload one photo at a time, or wait until you had access to a computer to upload multiple photos.