Iphone 4 manual volume control buttons faulty?
I've had this Iphone4 for a year now and woke up to a strange problem!
when I load up my music player in my iphone there is no volume slider bar, and when my phone is on the home screen with all my apps, manually pressing the volume + and - buttons brings up the usual "ring volume" but doesnt change the levels, (no white dots indacating volume) however when I have my earphones plugged into the headphone jack the buttons work fine and can adjust the volume and the music player has the volume slider at the bottom like normal!! it's very frustrating. I took it to the apple store and they had no clue so have booked an appointment for a few days time but was wondering if any of you have any solutions? when I go into settings - sound I can press the + and - buttons and it makes the volume slider go up and down, so none of this makes any sense!
any help would be greatly appreciated.
many thanks,
Josh
iPhone 4, iOS 5