Absolutely stonking service provider for me. The only signal at all where I live now (and even 3G), the 'best of a bad bunch' at my last place (as none had more than a 'miniscule' signal, and then only when I was on the 2nd floor - loft conversion - I got a Vodafone Pure Signal) and before that, near Reading in Berkshire so the middle of the UK Silicon Valley, again, it was the only signal that worked at my house!

Dave

In 18 months iv had my iphone 4 on the 3 network never had a problem,:thumb:

My iphone 4 does this and i'm on o2. If a 3g signal becomes weak it just fails to drop down to E and the call reception drops. If I manually turn off 3g there is full E or gprs signal to I find the failure of auto swithing particularly cr4p.

Thats because 3 dont have any 2G network to switch to :lol1:

Tony:D

I've got a HTC Desire HD and the missus has a iPhone 3GS and we are both on Orange. Inside the house mine will get 3G near enough 100% of the time whereas hers is more like 50/50, and when it loses 3G it must do something strange as she gets missed calls when it hasn't even rang (rebooting it seems to help though). Might upgrade hers to try the new one when it comes out see if that fixes the bug.