Could not activate mobile data network

[#1]

just swapped to giff gaff - SIM arrived today, registered, purchased £12 goody bag... have sent test text message and made phone call - so text and calls work - however received text message 'Here is an SMS to let you download your settings for internet.  You will need to be connected on wifi etc' clicked link and all i get is the 'Could not activate mobile data network' - how can i proceed?  I have an iphone 3 (old yes i know but it's been working fine on O2 for phone, text and web - switched to giff gaff to gain unlimited web access and free giff gaff to giff gaff calls...  please help

[#2]

follow the link below to the iphone guide to enter settings in manually.
iPHONE - http://bit.ly/jitbiphone

[#3]

iPhone settings:
http://bit.ly/giffgaffiphone

[#4]

Hi,

You need these settings so input them and you should be good to go: http://bit.ly/giffgaffiphone

All the best

[#5]

iPhone set up

You need to manually change the settings for the iPhone 2020 does not work it is easy enough to do,
Go into settings
General
Network
Mobile data network
You will then see the settings that need changing

MOBILE DATA

Apn - giffgaff.com
Username - Giffgaff
Password - Password (this is the word password)

VISUAL VOICEMAIL

Apn - Giffgaff.com
Username - Giffgaff
Password - Password

MMS

Apn - Giffgaff.com
Username - Giffgaff
Password - Password
Mmsc - http://mmsc-ac.mms.o2.co.uk:10021/mmsc
Mms proxy - 193.113.200.195:8080
Mms max message size - 2097152
Leave last section blank

Ensure not to press the reset button on completion and make sure mobile data is turned on along with 3G

[#6]

you need to enter the settings manually and then your internet will work fine