Whilst I was waiting for the appointment at the Genius Bar I was sitting next to a guy who was having issues with his 3GS for whatever reason and the techies as part of the diags always put a sensor in the headphone socket where the water sensor is and if it goes pink then it has come into contact with water and the warranty is void apparently a customer told me when the guy went away to scan something?
Is this true?
Is this true?