Not working sound

We would need a bit more information to help you with that.

What device is it? Brand, model, etc.
What version of Android are you running?
Is it all sounds through all apps and calls? Or is it just calls, or just apps?
Is it still no sound when use speaker phone for calls?
Do you get no sound when using headphones (wired) and/or Bluetooth?
 
That would be because webworkings is a regular and useful poster whereas I've had to remove some of your posts already and you've only been here a day.

Please restrict your replies to threads less than a month old.