What does fetch automatically mean on iPhone?

Related questions

1. Can I update my iPhone without WiFi?
2. Can iPhone 5s get iOS 12?
3. Does iphone5 support iOS 12?
4. Does Apple slow your phone down?
5. Should I update my iPhone?
6. Can I use my iPhone while it updates?
7. Does iOS 12 take up more space?
8. How many GB are needed for an iPhone?
9. Why do iPhones slow down after 2 years?
10. Does updating iOS delete everything?

Tags

1. #checks
2. #automatically
3. #select
4. #certain
5. #accounts
6. #feature
7. #requires
8. #available
9. #allows
10. #iphone
11. #fetch
12. #device
13. #often
14. #apple
15. #power
16. #battery
17. #effect