Windows Phone  Tap Settings -> Network & Wireless -> Cellular & SIM Settings -> Add Internet APN




INTERNET APN:
Profile Name: Warid LTE
APN:   warid
User name: Blank
Password: Blank
Type of Sing-in-info : None
IP Type :Ipv4
Proxy server (URL): Blank
Proxy Port : Blank
MMS APN:
Profile Name: Warid MMS
APN:   mms.warid
User name: Blank
Password: Blank
Type of Sing-in-info : None
IP Type :Ipv4
Proxy Server : 10.4.2.1
Proxy Port : 9201
MMSC (URL): http://10.4.0.132/servlets/MMS
MMSC Port: Blank
Maximum MMS Size (KB): 1024

Warid GPRS Settings for Nokia Lumia Series / Windows 8:

Go to Settings -> Access Point -> Add a New Profile, and enter the following details
Connection Name: Warid GPRS
Internet APN:
Access Point Name:  warid
Username: Blank
Password: Blank
Proxy address: Blank
Proxy port : Blank
Network type : IPv4
Authentication Type: none
MMS APN:
MMS Access Point Name:  mms.warid
Username: Blank
Password: Blank
Proxy address: 10.4.2.1
Proxy Port: 9201
MMSC:  http://10.4.0.132/servlets/MMS
Network type : IPv4
Authentication Type: none
and save the settings and activate the newly added profile