Ok, in case interested, there is now another thread with more or less your problem here on giffgaff:
There is also a link to another relevant thread under that one in Message 10 I think it was.
Hope you and this other user manage to get to the bottom of the problem. Maybe some other users who have the actual phone will read and reply with more useful suggestions too.
@giffgaff adviser. Thanks, I did look over that link before posting but as you will see the advice is contradictory! The person who has answered this thread has 02 web in their settings and it works whereas I did have it but deleted on the advice of previous log and now don't have an option to add it.
Enough is enough. I'm taking the phones back to CFW tomorrow and will choose something else. If no joy after that Giffgaff will be out the door as well!!
Thanks to all those who've tried to help....
Same problem. Have you had any luck yet ?? - I'm thinking of going back to 02 as well !! Tried setting up 56 - yes Fifty six times !! with ALL the suggestions on this site WITH NO LUCK. No help from Nokia or Giffgaff Agents - regret buying this phone - life too short for all this agro.