Use these steps to sync apps on Apple iOS 11. Check the software version using Software versions & updates: Apple iPhone & iPad on iOS 11.
- From the Home screen, tap Settings > General > Background App Refresh.
- To turn on or off for a specific app, tap the switch next to the app name.
- To change settings for all apps, tap Background App Refresh and choose from the following:
- Wi-Fi & Cellular Data
- From the Home screen, tap Settings > Accounts and Passwords.
- Tap to Add Account and follow any additional prompts or tap on an existing account to edit it.