What happens if you don't update your iPhone?

Related questions

1. Does iPhone 6 have iOS 12?
2. Is iOS 12.1 being signed?
3. Are Apple updates safe?
4. How do I get my iPhone to automatically update my emails?
5. Is iOS 11 good for iPhone 6s?
6. What is current version of iOS?
7. Who is the developer of iOS?
8. Is Apple still signing iOS 12.1 1?
9. What is the newest iPhone update?
10. Should I update my iOS?

Tags

1. #iphone
2. #hackers
3. #memory
4. #improvements
5. #malware
6. #flaws
7. #which
8. #version
9. #totally
10. #comes
11. #susceptible
12. #phone
13. #digital
14. #protect
15. #patches
16. #upgrade
17. #called
18. #security
19. #corruption
20. #latest
21. #means