Do QR codes work on all phones?

Related questions

1. Does Android have QR reader?
2. Does Android have a QR scanner built in?
3. Can I scan a QR code on my phone screen?
4. Can you have 2 SIM cards in an iPhone?
5. How does a QR code work?
6. What can a QR code do?
7. How do I scan a QR code with my camera roll?
8. How do I add a carrier to my iPhone?
9. How do I scan multiple pages on my iPhone?
10. What do QR codes do?

Tags

1. #built
2. #native
3. #android
4. #later
5. #running
6. #manufacturing
7. #comes
8. #mobile
9. #iphone
10. #track
11. #phones
12. #during
13. #smartphone
14. #camera
15. #functionality
16. #cases
17. #reader
18. #codes
19. #workers
20. #process
21. #vehicles