The iPhone speaker appears to be broken if you can't hear a caller via the receiver or even the speaker, or perhaps if you can't even hear sound notifications or media through the speaker. A few troubleshooting methods can securely resolve iPhone sound issues. Troubleshooting sound problems securely reduce the chances of inflicting additional damage to the iPhone for a company owner.

Volume Buttons should be checked.

To test volume, press the volume keys on the right side of the device while on the Home screen. The "ringer" icon shows on the screen if you're utilizing the built-in speaker. When you adjust the phone's volume while utilizing headphones, the "ringer (headphones)" icon shows on the screen. The headset jack could well be clogged with trash or an object which tricks the phone into believing a headphone is plugged in if the "ringer (headphones)" icon displays on the screen without the headphones plugged in.

Clean the plug and jack off your headset.

Using a lint-free cloth, clean the headset pin. Examine the jack on the headset. If an object is clogging it, remove it if it's accessible. Take your iPhone to an Apple retail shop for service if the object is difficult to remove.

Examine the Speaker

Clean the speaker mesh to remove any dirt or debris. To eliminate particles, wipe the mesh with a soft bristles brush. The iPhone speaker is not going to work correctly if it is clogged.

Examine the Mute Switch

If you still can't hear anything, press the Mute button on the left side of the iPhone, which is situated above the volume controls. The ringer is controlled via the Mute button. The ringer is configured to vibrate if an orange strip shows next to the button; shift the button towards the right to allow ringtone notifications. On the screen, the speaker icon appears. To increase or decrease the volume of the ringtone, press the volume down or up buttons.
Examine your sound settings

To access the iPhone's sound settings, go to the home screen and tap "Settings," then "Sounds." In the "Ringer and Alerts" section, look at the volume slider. You won't be hearing ringtone notifications if the slider seems to be all the way to the left, so move it to the right to raise loudness.

Examine your Bluetooth settings

Select "Settings" from the drop-down menu. If you are using Bluetooth accessories on occasion, go to "General" and then "Bluetooth" to see the Bluetooth options. To turn off the Bluetooth connections, tap the "On/Off" button if the feature is enabled.

Restart your iPhone if necessary.

Restart the iPhone if necessary. If sound problems persist, press and hold the "Sleep/Wake" button for several seconds, then move the red "Slide to power off" slider on the screen to switch off the iPhone. To turn on your iPhone, press and hold the "Sleep/Wake" button one more.

Your iPhone Should Be Reset

Restart your iPhone. If sound problems persist, press and hold the "Sleep/Wake" and "Home" keys together for a minimum of 10 seconds to reset the iPhone.

The iPhone must be restored.

As a last option, restore the iPhone to factory settings, which will wipe all data and repair the sound problem. Using the USB cable, link the iPhone to the computer. Launch iTunes and choose your iPhone from the "Devices" menu in the left pane. Hit the "Restore" button on the "Summary" tab. Re-press the "Restore" button and wait for your iPhone to return to its factory default settings. When the operation is finished, your iPhone will restart automatically. To reconfigure your iPhone, drag the "Slide to Set Up" slider on the iPhone's screen and follow the advised instructions in the iOS Setup Assistant.

If you can't hear anything when using media apps like FaceTime or perhaps the built-in Music app, slide the volume slider in the app to the right to boost loudness. Some preinstalled and third-party software, like instant messaging programs, have a mute feature that turns off sound; check sure it isn't turned on.

Since this process discards saved files and then restores the factory settings, make a backup of your iPhone before proceeding with the restoration. If the iPhone's sound difficulties persist, take it to an Apple retail shop for extra diagnostics and repair. The device's hardware may be broken.