How to use the icloud storage space of Apple mobile phone?

1. Click the phone settings icon. Go to the settings page and click the small gray arrow on the right side of iCloud.

2. in the iCloud interface, click the small arrow on the right side of "storage and backup".

3. as you can see in the "storage and backup" interface, the total storage space is 5.GB, and the usable capacity is only 577KB. You can also choose to buy more storage space, which will cost you money every month. Click the small arrow to the right of "Manage Storage Space".

4. You can see the prompt in "Manage Storage Space" that the iPhone failed to back up last time due to insufficient space. Click the small arrow on the right side of my iPhone to change the scheme of my storage space.

5. Turn on the button of the camera film. When it turns green, it is turned on. Back up the photo storage to iCloud as shown by the arrow in the figure.