How to block, mark as spam, or unblock phone numbers on Infinix devices

Infinix S5 Pro (16+32) Infinix S5 Pro (16+32)
Infinix S5 Pro (48+40) Infinix S5 Pro (48+40)
Infinix S5 Pro Infinix S5 Pro
Infinix S5 lite Infinix S5 lite
Infinix Smart 4 Infinix Smart 4
Infinix Smart 4c Infinix Smart 4c
Infinix Hot 8 Lite Infinix Hot 8 Lite
Infinix S5 Infinix S5
Infinix Hot 8 Infinix Hot 8
Infinix Note 6 Infinix Note 6
Infinix S2 Infinix S2
Infinix Smart 2 Go Edition Infinix Smart 2 Go Edition
Infinix Smart 3 Plus Infinix Smart 3 Plus
Infinix Hot 7 Pro X625B Infinix Hot 7 Pro X625B
Infinix Smart 2 HD Infinix Smart 2 HD
Infinix Zero 6 Infinix Zero 6
Infinix Zero 6 Pro Infinix Zero 6 Pro
Infinix Hot 7 Infinix Hot 7
Infinix Hot 7 Pro Infinix Hot 7 Pro
Infinix S4 Infinix S4