i have had this problem on my iphone 5 for the last few weeks it is the most annoying thing ever, i have tried 2 screen replacements and there is nothing i can do and thick off that will fix it, i do not want to replace it as i know it is something very simple, but it just will not stop ghosting, the safari app 3 from the left on the bottom is the main app which keeps opening randomly, and the letter 'B' goes crazy when typing. i have tried covering around the 2 gold circle connectors for the home button but there is nothing i can do as i can not cover this as it is needed for the home button to work? most annoying problem ever if it happens to you :/