Mine is iPhone 4S (warranty is void). I'am having the same problem. Sometimes back to normal (after idle for a while), but not last. Turning off the phone raises back the issue.
- On volume up/down button clicked: Ringer overlay is shown but not bars
- No lock/unlock sound
- No notification sound
- It's ringing when receive phone call or set volume from Sound setting
- After turned off, iPhone won't turn on unless plugged to charger
I've done these:
- Cleaned up charging port
- Dryed the iPhone (hairdryer; below the sunlight) - just in case
- Reset all settings
I haven't restore the phone since I'm not sure if messages, mails, WhatsApp, LINE (etc) histories will back after synced from backup.
I read that deleting com.apple.iapd.plist (Root>System>Library>LaunchDaemons) can fix this, but it needs jailbraking (iFile/iExplorer) which I don't want to. Furthermore, "Deleting the 'com.apple.iapd.plist' may effect the functioning of hardware accessories that go with various apps, such as FM transmitters and Nike accessories, etc." —wisso (https://discussions.apple.com/thread/3790682?start=45&tstart=0)
I'm not sure if some apps crash with latest iOS update and cause this.
I'm still looking for the right solution.
i have already solve the problem..
follow the step.
1- lock skrin with power button
2-wait for a minute
3- double click home button..
4- if u see the music sound slider hold it quickly (only if u see the slider, please be quick before the slider hide again)
if u dont see the slider or it has been hide again, repeat step 1
5- use other finger to touch play button.. then slide the sound left and right
6- done your sound will be enable back..
7- restart your phone to make sure the problem not coming back
it work for my iphone 4s..tq
Hey i had that problems and more. it worked for me the thing with the earphones but it didnt last long and i had to do it several times which kinda ruined the experience.
Then one day i accidentaly left my I phone on a heater (radiator) for a couple of hours causing it to burn as **** and at first to show nothing and after 5-10 minutes it showed the overheating screen. When it finally coolled of (which was about 30 minutes and a lot of personal agony later) all the above problems were gone. I dont want to jinx it but its been 3 days and it still works fine.
now i am NOT saying u should do that i am just saying what helped me...
perhaps the overheating reboot is different from the one where u restart it.
Good luck to the rest of u with the problems