IPhone 5 sound help. It won't work while in silent anymore

My sounds for videos isn't working. I always have my phone on silent and the sound has always worked thus far. I started using assistive touch since my top power button slowly stopped working. I went to take a screenshot and accidentally clicked "unmute" instead of "more". Since then, sound from videos from places like YouTube and Facebook haven't worked like they did before. Can anyone help? I forgot how I fixed this originally. Turning the left side button for vibration doesn't help and the volume buttons won't make it work either.

If you have iOS 7 swipe up from the bottom margin and you'll see a volume bar. Adjust it as needed

Might be need to fix with iphone service center you can search where is your nearest mobile center by google.

  • YouTube sound not working when iphone is on silent? I've had my iPhone 4 for over a year now, and I've never had this problem. It started today, if I try to watch a YouTube video without headphones and the phone is on silent, there's no audio. But if I turn the ringer on there's audio. Obviously I've looked at the volume levels, and they're up. Like i said its only started today and it's very frustrating!
  • Why won't my iphone 5s camera shutter goes to silent? I've turned my phone to silent, but the camera shutter still won't go to silent. It makes a really loud sound and when i screenshot something, it also makes a loud sound. How do I turn it to silent without jail breaking? I've been using this Cymera app cause it can take pictures without making a sound but the quality isn't as good as the original camera app.
  • Snapchat won't record sound, but my phone gets sound on videos? Okay, summoning all the tech detectives here. For months, my Snapchat records a very muffled (almost like its underwater) sound, but you can't reallt hear it. I can't explain it, but the sound is inaudible and muffled. The weird thing is, the problem is only and exclusively on Snapchat. If I record a phone video, the sound is clear as day. I have an iphone. Any thoughts?
  • My iPhone won't go on silent? I just got an iPhone 5 and when I turn the volume all the way down there's still sound it makes. I went to the sound settings but couldn't figure it out. There's no setting for just silent or just vibrate?