giffgaffer's guide to iPhone 4 http://community.giffgaff.com/t5/Learn-giffgaff-Top-Tips/giffgaffer-s-guide-to-iPhone-4/td-p/52685
Enter these manually
Iphone Internet/MMS Settings
APN - giffgaff.com
Username - giffgaff
Password - password [Leave blank]
^ [Note: The correct answer has changed since this post was made]
MMS Settings
APN - giffgaff.com
Username - giffgaff
Password - password [Leave blank]
^ [Note: The correct answer has changed since this post was made]
MMSC - http://mmsc.mediamessaging.co.uk:8002
MMS Proxy - 193.113.200.195:8080 82.132.254.1
^ [Note: The correct answer has changed since this post was made]
Max message size - 307200
MMS UA Prof URL - [blank]
Turn phone off and back on and you're in business!!!
**remember MMS messages cost 16p each and are not included in goodybags**
On your iPhone go to: Settings>General>Network>Cellular Data Network
Then enter:
Cellular Data
APN: giffgaff.com
Username: giffgaff
Password: password [Leave blank]
^ [Note: The correct answer has changed since this post was made]
Visual Voicemail
leave blank as giffgaff do not provide it
MMS
APN: giffgaff.com
Username: giffgaff
Password: password [Leave blank]
^ [Note: The correct answer has changed since this post was made]
MMSC: http://mmsc.mediamessaging.co.uk:8002
MMS proxy: 193.113.200.195:8080 82.132.254.1
^ [Note: The correct answer has changed since this post was made]
MMS Max Message Size: 307200
MMS UA Prof URL: leave blank
restart the iPhone to activate the settings
Guide to iPhone 4: http://bit.ly/giffgaffiphone4
Guide to iPhone 3G/3GS: http://bit.ly/giffgaffiphone
On your iPhone go to: Settings>General>Network>Cellular Data Network
Then enter:
Cellular Data
APN: giffgaff.com
Username: giffgaff
Password: password [Leave blank]
^ [Note: The correct answer has changed since this post was made]
Visual Voicemail
leave blank as giffgaff do not provide it
MMS
APN: giffgaff.com
Username: giffgaff
Password: password [Leave blank]
^ [Note: The correct answer has changed since this post was made]
MMSC: http://mmsc.mediamessaging.co.uk:8002
MMS proxy: 193.113.200.195:8080 82.132.254.1
^ [Note: The correct answer has changed since this post was made]
MMS Max Message Size: 307200
MMS UA Prof URL: leave blank
restart the iPhone to activate the settings
Guide to iPhone 4: http://bit.ly/giffgaffiphone4
Guide to iPhone 3G/3GS: http://bit.ly/giffgaffiphone
different guides are also found here;
http://community.giffgaff.com/t5/Learn-giffgaff-Top-Tips/giffgaffer-s-guide-to-iPhone-4/td-p/52685
http://dl.dropbox.com/u/1428694/giffgaff_iphone4.pdf
http://community.giffgaff.com/t5/Learn-giffgaff-Top-Tips/iOS-5-MMS-messaging/m-p/1848333