Hello
It took me some time to find the settings for my mobile once I had brought a M1 sim card
So here they are, hope it will help
For GPRS
Settings
Wireless
Mobile Network
Access point Name
Menu
Create new APN
Name: miinternet
APN: sunsurfmcard
Username: 65
Password: user123
APN Type: default
Menu
Save
For MMS
Settings
Wireless
Mobile Network
Access point Name
Menu
Create new APN
Name: mimms
APN: miworldmcard
Proxy: http://wap.miworld.com.sg
Port: 8081
Username: 65
Password: user123
Server: http://mmsgw:8002
MMCS: http://mmsgw:8002
MMS Proxy: 172.16.14.10
MMS Port: 8080
MCC: 525
MNC: 03
Auth Type: pap
APN Type: mms
Menu
Save
Turn phone off then on again