My iPhone 5 cannot make any backups anymore. My last backup is from June 2015. I have checked if:
I have enough space in iCloud (about 3 GB).
The size of the backup (approximately 790 MB).
Removed many photos from my iPhone.
Followed these steps:
Turn off iCloud drive, reboot, and turn on safety backup again (no success).
Turn off iCloud, reboot, and turn on iCloud again (no success).
Sign out of iCloud. turn off phone, turn on again and login to iCloud again (no success).
Removed my latest backup in iCloud (which turned of safety backup) and turned on safety backup. Again with no success.
And what makes it even worse is that the iPhone reports no error message telling me why my backup failed.
How can I make this work again?
Links I already read and used: