Slide your finger down the display starting from the top edge of your mobile phone.
Tap ALL SETTINGS.

Tap mobile+SIM.

Tap SIM settings.

Tap add MMS APN.

Tap the field below "APN".
Key in mms

Tap the field below "WAP gateway (URL)" and key in 61.88.190.10

Tap the field below "WAP gateway port" and key in 8070

Tap the field below "MMSC (URL)" and key in http://mmsc.optus.com.au:8002/

Tap the save icon.

Tap the home icon to return to the home screen.