Iphone ringer volume problem fix
This is basically because of water vapours which get into the port for earphones at the top left of your mobile.
The problem is that your device might be thinking that the junk stuck inside the jack is actually a stereo plug connected, so it turns your built-in speakers off thinking you're jamming with your headphones on, though you're obviously not.
There used to be a fix for this problem via jailbreak by just deleting some file and making one terminal in the port disabled so that you could use ringer with and without earphones.
But now that most of you would have upgraded your software by now so i have got one simple fix for you guys.. and that is....... just try to remove trapped water vapours and possibly some rust that may have deposited there in the audio out (earphone port/ headphone jack) at the top left of your iphone.
In order to do that, just try a cotton bud which we normally use to remove earwax and clean the inner sides of audio port/ headphone jack or whatever you call it.
Its as simple as that.
iPhone 4S, iOS 6.1.2