I personally have been using the new iPhone 4 on the o2 network for the past couple of days. So far I have not experienced any reception problems or yellow spots in the screen. Hopefully it will stay like this and I think these problems are on certain batches of phones.
The phone itself is very good and pretty much a netbook in a phone.
Moonandstar.
If So, then good luck Moonandstar. But I found some feed back from users using in America, may be they got the first lot over there! Anyway the news is right!