What does CDMA and GSM unlocked mean?

Related questions

1. Can a phone be both GSM and CDMA?
2. Is iPhone 8 plus unlocked?
3. Can you change a GSM phone to CDMA?
4. Does Verizon sell unlocked iPhones?
5. Is Straight Talk iPhone 6 GSM or CDMA?
6. Is Republic Wireless GSM or CDMA?
7. Does Korea use GSM or CDMA?
8. Can a Verizon phone be used on straight talk?
9. How do I tell if my iPhone is CDMA or GSM?
10. Is GSM 2g or 3g?

Tags

1. #first
2. #whole
3. #global
4. #point
5. #system
6. #concept
7. #unlocked
8. #subscriber
9. #carrier
10. #phone
11. #identity
12. #standard
13. #service
14. #phones
15. #number
16. #itself
17. #module
18. #applies
19. #mobile
20. #worldwide
21. #provider
22. #major