I recently bought a 2nd hand iPhone 4S, which is great, but there's been 1 thing nagging at the back of my mind when using it. The home button, compared to other Apple devices I've used feels quite 'soft', i.e. it doesn't noticeably 'click' when I press it. The button functions perfectly apart from this; double clicks and single clicks all register fine first time, every time, I'm just worried that it may be a sign of impending home button doom? Also, does anyone know how much a home button replacement would cost at a phone repair shop in the UK? I've had a quick look, but most shops seem to focus on screen repairs.