I have a 2G iphone which generally serves my needs well enough, with one exception. The ringtones (including the musical ringtones I've downloaded) are, at their loudest, often insufficient for me to hear them (I'm 78 years old). I've been told that the ringtones are much louder on the 3G phone. Is this true? I realize that this would not be an adequate reason for most people to buy a new phone, but for me it would be a considerable advantage.