So today, for no reason, my iphone (3gs) started having the following problems: 1) Coming randomly out of standby (like I hit the home button). 2) No function at all from home button. 3) Phone displays "Charging is not supported with this accessory" and related messages and problems even when nothing is plugged in. 4) Sound out of speakers is about 10% of normal volume, even when at max. 5) Phone will randomly enter "voice command" Some of these problems come and go, and there's other miscellaneous issues, but these are the most prominent ones. My phone is out of warranty, so I can't get it fixed with apple. I suspect it might have something to do with the charging end, I took some dust out of there but it didn't change anything.