I've had my iPhone 5 since January 2013. Lately my home button has started to feel weird when I click it like something is stuck underneath or around the edge. If I touch it without pressing it it actually makes a sound almost like the click sound. I don't have a screen protector on, so it's entirely possible that gunk has gotten in there. Is there any way to clean it? Is a replacement worth it for such a minor annoyance (I hate the idea of refurb replacements)?