this is probably really simple, but just got my iphone 4, and am trying to register it through itunes, where it asks for the iphone number it has 2 boxes, obviously the longer box is for the actual mobile number, but what is the smaller box before it, i presume it probably something to do with what country we are in, but am not sure, i am in the uk by the way

TIA

The smaller box is for the area code I.e 07xxx, 01xxx, 020, 0121 etc. The box does seem quite small, Apple must assume everyone in the UK lives in London or something.

i just put the first 5 numbers of my mobile number in there, and the last 6 numbers in the second box, seems to work ok, thanks

i have a 3gs on contract and have never seen or heard of this??

I think it's the Apple ID registration?

All the first box is for is the prefix of your country. i.e +44
But dont worry about about this

Just put the first 5 digits of your phone number in the first box and the remaining 6 digits of your phone number in the second box. ie: 07000 000000