Airtel Nigeria Internet Settings for Windows Phone

In your Windows Phone Go to Settings -> Cellular -> SIM Settings -> Add Internet APN

INTERNET APN
APN: internet.ng.airtel.com
User name: Blank
Password: Blank
Proxy server (URL): Blank
Proxy Port : Blank
IP Type :Ipv4
MMS APN
APN: mms.ng.airtel.com
User name: Blank
Password: Blank
WAP Gateway (URL): 172.018.254.005
WAP gateway Port : 9201
MMSC: http://172.23.1.12/mms/wapenc
MMSC Port: Blank
Maximum MMS Size: 1024
IP Type :Ipv4