If you have enabled Google Photos "Auto Backup" on your iOS device and your photos and videos are not automatically being backed up, then follow the steps given below.

1. Open "Google Photos" app on your iOS device.
2. Tap "Menu" icon located at the top left on the screen.
3. Select "Assistant" option.
4. If you are getting "Waiting for connection" or "Waiting for Wi-Fi", then you need to either change your setting or connect to a Wi-Fi or mobile network. Tap the card to change your settings.
5. If you are getting "Back up & sync Off", then tap "Turn ON" on the card. If you turn it ON, your photos and videos including ones you capture in the future will be backed up to Google Photos.
6. "A photo or video was skipped": You will get this message if a photo or video on your mobile device does not meet Google Photos requirements. Your photos can not exceed 75MB or 100 megapixels. Videos can not exceed 10GB.
7. If you are getting "Backing up photos" or "Backup complete", this means your photos and videos should be saved.

Quick Tip to Backup your Digital Photos
If you have treasured photographs, or you take photos of everything you like, you won't want to lose them. So, what is the best way to backup photos on an ongoing basis? In the back of your mind, you know you need to backup all of your photos. But where do you start? Here's how to backup your digital life: PicBackMan is the easiest and simplest way to keep your videos safely backed up in one or more online accounts. Simply download PicBackMan (it's free!), register your account, connect to your online store and tell PicBackMan where your videos are - PicBackMan does the rest, automatically. It bulk uploads all videos and keeps looking for new ones and uploads those too. You don't have to ever touch it.