Following IOS4 messing about Apple told me to send my phone 3g in and they would send me a new one as it was only 2 months old, It was received today and is now at
Not sure about UK.
But when I had to send a phone in before.
I called.
Next day got box with temp phone.
Sent back that day.
They got next day.
Two days later I got my refurbished phone back and sent back in temp phone.
Too late now but best route is at Genius bar at an Apple store . If its a hardware issue they usually replace on the spot free if in warranty and no damage or for a fee for out of warranty iphones
They did offer me that option but I am no where near an Apple store, they gave me 3 options.
1- Take it to an Apple store
2- Advanced Repair, the send out a temp phone and a box for me to send mine back for repair, once repaired they send it out with another box to send the temp back, but a £300 deposit was required for this.
3- They send out a box, I send it in, they send it out once repaired