Hi all and thank you for reading this I have bought a iPhone 3G (factory unlocked) and I have a huge problem with it. Most of the time when I call somebody I will have a huge interference in the call. It sounds like the signal is interfering with the microphone. There is no problem when I use the headphones. I used to have an old iPhone (Jailbroken) that had the same problem but I though that was because of me not being to careful with it. I have been very careful with my new phone and I have had this problem within 24 hours of first use. Unfortunality it is virtually impossible to return the phone because I bought i abroad. I have changed carriers between phones (first KPN and now Vodafone) (I live in the Netherlands) Is there anybody that can help me?