MTN Cameroon APN Settings for Sony Xperia Z4

Go to Settings More Cellular network settings Access point names

Press the Menu and select New APN

Enter name: MTN
APN: INTERNET
Proxy:
Port:
Username:
Password: guest
Server:
MMSC:
MMS Proxy:
MMS Port:
MCC: (keep the default value set by phone)
MNC: (keep the default value set by phone)
Authentication type:
APN type: default

Keep the default values set by device for all blank fields shown above.