Default [Q] NEO N002/N02-m - No mobile data

Hey folks,

Having a bit of bother with a new NEO N002, running android 4.0.4. Its currently using a Giff Gaff sim.

The trouble im having is that it will not allow for a mobile data connection, even though it it highlighted in the drop down menu, it confirms that it is using the o2 data signal. However getting the no internet connection screen when browsing and any web using apps will not work.

Any help or insight into what im missing or overlooking would be greatly appreciated!