Go to SettingsConnections Mobile networksAccess Point Names
Add a new APN by pressing ADD on right top corner. If device has already set values for AIS Internet for any fields below leave them. Change others as below.
Name: AIS Internet APN: internet Proxy: Port:
Username: Password: Server: MMSC: MMS proxy: MMS port: MCC: 520 MNC: 01 Authentication type: APN type: default APN protocol: IPv4 APN roaming protocol: IPv4 Bearer: Unspecified APN PPP phone number:
Not set