have you put the mms details in, and also have you got the correct email setup settings from whoever your email is with
Settings > Wireless Controls > Mobile Networks > Access Point Names > "menu button" > "New APN"
Fill in the details below. ( i have listed all the fields listed in the settings screen, just leave the blank ones blank)
3G GPRS Settings.
APN type: default
Once you have entered the above settings press the "menu" button and press "save"
You need to set up another account for MMS.
Name: giffgaff - mms
MMS proxy: 188.8.131.52
MMS port: 8080
APN type: mms
windows 7.5 ie Mango is known for setting mms up with the first sim that goes in the phone
i assume that is the same for data
whilst the data APN can be changed so far no-one has managed to hack it to get mms working with giffgaff as the sims don't contain the info needed. (unless any1 knows different of course, i'm happy to learn)
This should work (and stops you having to edit APN settings). Download the the HTC Connection Setup app from the marketplace (obviously over WIFI as you dont have data access). Run the app, select Giffgaff and save and then restart the phone. This configures everything in the phone. I have done this successfully on the Trophy, HD7 and Mozart HTC's and they all run WP7.5. As for MMS, make sure you have credit in your account as this is not free on goodybags.
If MMS still fails, I have used this message to successfully get MMS working on non HTC WP7.5 phones
Hi, thanks, just been told that its due to Windows not being informed that Giff Gaff is here !!!! as such thats why my phone shows as O2 not Giff Gaff....
anyone know who to inform in GiffGaff for them to inform Windows Phones as I seen loads of members with the same issues !!!