Hey everyone. Just a question for anyone that has any knowledge of opening up and fixing iphones. My home button suddenly is really hard to work with. I would press it, but nothing will happan. But if i blow into the dock of the iphone, it will work for about 15 miniutes and ill have to repeat the process, could this be dust? do i have to replace the home flex cable? what can i do to fix it if its dust? thank you in advance