iphone 5 says could not activate cellular data network

[#1]

My iphone 5 mobile data is also down. settings> general > mobile data > has even lost the option to maually add the apn settings. All's i have is on/off toggles for mobile data, enable 3g, data roaming.

Any idea's?

[#2]

try these setting as they work on my iphone 5 and reboot your phone

ios6) Settings > General > Mobile data > mobile data network
Under APN put:
APN: giffgaff.com
Username: giffgaff
Password: password (this is the word "password")
leave visual voicemail empty (gg don't do it)
under MMS put:
APN: giffgaff.com
Username: giffgaff
Password: password (this is the word "password")
MMSC: http://mmsc-ac.mms.o2.co.uk:10021/mmsc
MMS Proxy: 193.113.200.195:8080
Max MSG size:307200
Settings > General > Network/Mobile Data > Enable 3G <ON>
Settings > General > Network/Mobile Data > Cellular Data <ON>
Settings > Messages> MMS Messaging <ON>
You may also need to reboot your phone to implement these settings.

[#3]

my problem is that i dont have to option anymore to add my own settings as the mobile data network is not on my iphone 5. it was the other week though. as i put them in manually after updating to ios 6.1

[#4]

if your option is missing then you make have to restore your phone and restall 0S 6.1.2, is your phone running on 6.1.2?

[#5]

Updating to ios 6.1.2 has brought the 'mobile data network' option back to my phone.

Not sure why it disappeared, strange!

Thanks anyways!

[#6]

Follow these instructions

iPhone/iPad Cellular data settings

Go to

Settings -General- Cellular- Cellular Data Network

And then type in these deatils


APN : giffgaff.com
Username: giffgaff
Password: password

After this reboot your iPhone/iPad