GoSmart Mobile Internet and MMS settings for Windows Phone 8

Open cellular settings, in the App list, tap Settings > Cellular.

Select Data connection and turn this On.

Enable Highest connection speed

Tap Add Internet APN

Make below changes to the configuration

APN: multibrand
User name:
Password:
Proxy server (URL):
Proxy port:
IP type: IPv4

Tap Save

Done.

Open cellular settings, in the App list, tap Settings > Cellular.

Tap Add MMS APN

Make below changes to the configuration

APN: multibrand
Username:
Password:
WAP gateway (URL):
Wap gateway port:
MMSC (URL): http://gsmt.mmsmvno.com/mms/wapenc
MMSC port:
Maximum MMS size: 1MB
IP type: IPv4

Tap Save

Done.