Volume bar and sound on iPhone 4s?

When I'm playing music on my iPhone the volume bar disappeares and there's no sound. Everything else works perfectly, it rings etc just music and media it won't make any sound. Any ideas?

Ringer volume is up. System volume is muted.

Just slide the volume up in the music.app If that doesn't work, then i'm confuzzled

I've had this problem twice now. First try deleting all your songs and media, go to the iTunes store, and go to your purchases/ downloads and click download all. Of that doesn't work, you may need to reboot, and if that doesn't work, you may need to perform a restore.
To restore, use iTunes on a computer, plug in your iphone. Then But before you click restore, I'd recommend backing it up so you can restore from a back up. To back up, either use iTunes on the computer, or go to settings and iCloud, then click back up.
Once done either go to iTunes on a computer, and click restore. You must keep your phone plugged in until it is finished.
Or go to settings-general- reset (which is at the bottom) and click erase all content and settings.
Then re download everything from your back up! Hope I helped!

I agree with Bone!

Turn up on settings

  • Why doesn't my iPhone 4S volume bar don't work? Okay so I found out like three days ago that my volume doesn't work like once I try pressing on the + or - on the volume it just says ringer and it doesn't go high or low, it also doesn't work for like an app example vine or fun run, or music. I tried going to settings, general, reset, and reset all settings and its still not working.
  • Why does the volume bar on my iphone disappear and appear whenever it wants to? I have an iPhone 4. If I try and listen to music the volume bar goes away and when I try to adjust the volume with the + and - buttons the volume bar under "ringer" is gone. I've tried restarting my phone, fixing the settings, plugging in my earphones and cleaning where you plug them in and connecting my phone to my laptop but nothing seems to work.
  • Why does't the volume bar on my iPhone 4s appear? I can't play music out loud with my iPhone. The volume bar only appears when I have headphones in and it still will disappear with them in sometimes. Could have to do with something getting wet? I've updated and rebooted my iPhone but the volume bar still doesn't appear.
  • Volume bar disappeared on my iPhone 4s? I put my phone on an iphone dock and when i took it off my volume bar disappeared. I tried cleaning it, i tried holding the top button and double clocking the home, i've rebooted it, turned it on and off. Nothings working, please help