iPhone 4 lineout low volume level
i switched from iPhone 3G to iPhone 4,
i use it in my car using lineout cable.
i checked: volume level from iPhone 4 is much lower, than iPhone 3G.
i use max level on iPhone 4, max level in my car system, but still don't have loud sound.
i don't have any limitation in settings, i checked that together with my old phone.
Any suggestions?
iPhone 4, iOS 4