My iPhone 6s Plus will not automatically back up.
Plugged in to the PC ( Windows 10 ) and Wi Fi is on ok. The new phone which replaced an iPhone 6 has never automatically backed up to the Cloud. All settings have been checked. There is 4.66G available. A visit to the Genius Bar failed to solve the problem. I even tried re-installing iTunes and resetting passwords. In iTunes 9.1 Automatic back up is selected however, the phone just backs up to the computer. Thank you for reading this question. Any advice will be gratefully accepted.
iPhone 6s Plus, iOS 9.1