iPhone – How to Fix Apps Not Updating Automatically

I have to open the App Store and tap Update to keep all of the apps up to date. There is always a big list of apps waiting to be updated, which takes quite a while to complete. This issue seems to have started around the release of iOS 9.

• The option for Automatic Downloads is ticket under Settings > iTunes & App Stores;
• Connecting to Wi-Fi has not resolved the issue;
• The instructions displayed on Apple’s support page has not resolved the issue;
• Reset All Settings has not resolved the issue.

There seem to be countless of people with this issue if you search the Internet. Unfortunately, none of the suggested resolutions by users have helped in my case. Could Erase All Content and Settings really be the only way to resolve this issue?