Does your iPhone or iPad prompt annoying message that iCloud does not have enough space to continue backing up the device? Apparently the 5GB free space is not enough for you to back up all data on your iOS devices to iCloud. This post offers 2 easy methods for you to delete iCloud backup:
Warning: If you delete the iCloud backup for your iOS device, iCloud stops automatically backing up the device. Be sure to enable iTunes backup in case you might lose important data from iPhone, iPad and iPod.
Delete iCloud Backup from Computer (Windows & Mac)
Steps to delete iCloud backup from computer differ slightly for Windows users and OS X users.
For Windows Users:
1. Open iCloud for Windows, then click Storage.
2. Click Backups on the left, select an iOS device on the right whose backup you don't need, then click Delete.
For Mac Users:
1. On your Mac, Open iCloud preferences, then click Manage at the bottom of iCloud Interface.
2. Click Backups on the left, select the backups which you don't want to keep.