How do I fix the speaker sound on my iphone 4s?

bad plug

Are the headphones regular wireless (with a transmitter, sometimes called base or dock) or are they Bluetooth headphones ?

It probably fell onto the headphone jack and something got messed up there. That's a problem that you could maybe fix by taking it apart and reseating the button actuator. If it fell onto the button, it may have pushed the actuator farther into the phone. The button pushes down on another button inside that is part of the actuator module, so may have been pushed around.

If it always works with headphone - without fail - then it is likely the fault is within the headphone socket. You'll appreciate that when you plug in headphone, the speakers in the laptop are cut off - which is a mechanical break in connection caused by the plug. Sadly, it sounds like it is staying disconnected.

the plug on the inside of charger in phone is broken had this same issue

Corrupted software

It isn't often that Apple gives specific directions about how to fix your problem! Restoring the iPhone 4S will erase everything on it, so make sure everything on the iPhone 4S is stored elsewhere prior to restoring. To restore, connect your iPhone 4S to a computer with iTunes installed. Click "Restore" on the iPhone 4S summary page (click on your iPhone icon on the left menu to find this page). Follow the directions to restore. If your iPhone 4S displays the text "Please wait. Very Low Battery," leave it plugged in. This charges the iPhone 4S enough to be able to restore. If the iPhone 4S hangs on this screen for long periods of time, you may need a new battery.

Force restore mode

If your iPhone 4S is hanging with an Apple logo, or exhibiting some other software problem that prevents iTunes from recognizing it, you can force it into recovery/restore mode and then use iTunes to restore the software.
If the device is powered off, plug one end of your USB cable into the iPhone 4S and leave the other end disconnected. Press down on the Home button, and keep holding it down while you plug the USB cable into your computer. After 5-10 seconds, you should see a "Please Connect to iTunes" image on the iPhone 4S, and iTunes should prompt you to restore the software; follow the prompts and the instructions given above.
If the device is powered on, hold down both the power and home buttons until the device reboots and displays the "Connect to iTunes" image (generally, 5-15 seconds).
God bless you

Bad headphones/speakers

It's unlikely your headphones or speakers are bad, but it's worthwhile to eliminate these as the source of your problem at the beginning. Try your iPhone with another set of headphones or speakers just to make sure that the problem is with the iPhone.

Bad audio jack

The most likely cause of audio output problems on iPhone 4S is a bad audio-out jack. If you have determined that the problem does not lie in your external speakers, you should replace the headphone jack.
please follow the steps and fix it.
God bless you

Bad headphones/speakers

It's unlikely your headphones or speakers are bad, but it's worthwhile to eliminate these as the source of your problem at the beginning. Try your iPhone with another set of headphones or speakers just to make sure that the problem is with the iPhone.

Bad audio jack

The most likely cause of audio output problems on iPhone 4S is a bad audio-out jack. If you have determined that the problem does not lie in your external speakers, you should replace the headphone jack.
God bless you

you can warranty them on there website. they will probably send you a new pair.

HEADPHONES AND SPEAKERS Hi There Try this, VOLUME Try Adjusting the vlume on your PC first. Check the volume on the Headphone too if there is one. CLEANING Using a dump clothe. Wipe the plugs with a twisting motion. WIRELESS\BLUETOOTH Check your battery if it is drained. Try replacing them witha new one or charge them if they are rechargables. If all fails then You may have a Sound Card problem. Using a spare Speaker or Headphone check it if it works. If its not then its Defective and needs replacement. If its working then your Speakers or Headphones are defective. Try fixing them by cleaning or checking the Continuity of its cables using a analog Multi tester. Hope This helps =============================================== If you are having trouble with a Newly bought items then return them a demand a replacement or a refund!You may have purchased a reconditioned\repaired\factory defect product.