If your iPhone 17 has no sound, check Silent mode and Do Not Disturb, then use the Ringtone and Alerts slider to check the speaker. When your iPhone 17 suddenly goes quiet or the volume is way too low, it can throw you off completely. This can happen during calls, while watching videos, or when you're trying to listen to music. The good news is that most sound issues are caused by simple settings or minor software hiccups that you can fix yourself in just a few minutes.
If you are not sure whether it is the speakers or the software, run an online quick sound test first. A playing test tone only confirms that sound played during that test; check the Ringtone and Alerts slider and try a call on speakerphone if the issue continues.
Check the Physical Buttons
Start with the basics on the phone itself. The Action button on the left side (which replaces the old Ring/Silent switch) might have Silent mode turned on. Press and hold the Action button to toggle Silent mode, and you'll see a banner on screen confirming when Silent mode is on. Also, quickly press the volume up button on the left side a few times to make sure the volume isn't just turned all the way down.
Sometimes a case can interfere with these physical controls. Take your iPhone out of its case for a moment to make sure nothing is blocking the buttons from moving properly.
Adjust Your Sound Settings
Open the Settings app and tap on Sounds & Haptics. Here, you can drag the Ringtone and Alerts slider. Enable Change with Buttons if you want the volume buttons to adjust ringtone volume; if alarms or alerts are quiet, check their separate volume sliders in these settings where available.
Also, check that the system isn't set to mute. Go to Settings > Focus and see if any Focus modes, like Do Not Disturb or Sleep, are active. These can silence calls and alerts. If one is on, turn it off while you test your sound.
Disconnect Bluetooth and Audio Routes
Your iPhone 17 might be trying to send sound to a paired device instead of its own speakers. Swipe down from the top-right corner to open Control Center. Look at the audio controls in the top-right. Tap the Playback Destination button there, then select iPhone from the list.
For a more thorough check, go to Settings > Bluetooth. If you see any devices connected, tap the info icon (i) next to them and choose Disconnect. You can also just toggle Bluetooth off here temporarily to see if your speaker sound returns.
Clean the Speaker Grilles
Dust and pocket lint can easily clog the speaker grille at the bottom of your iPhone 17. Take a close look with a flashlight. Use a soft, dry, clean-bristled brush, like a new toothbrush, to gently brush the grille.
Never insert anything sharp like a pin or paperclip into the holes, as this can permanently damage the speaker.
Force Restart Your iPhone 17
A force restart is different from a normal off-and-on reboot. It clears the device's memory without deleting any data and can fix temporary glitches affecting the audio. Here's how to do it on the iPhone 17: quickly press and release the Volume Up button, quickly press and release the Volume Down button, then press and hold the Side button.
Keep holding the Side button until you see the Apple logo appear on the screen, then let go. This might take longer than 10 seconds. Once it boots back up, test your sound again.
Check for Software Updates
Apple regularly releases iOS updates that include bug fixes. The latest release is iOS 27.0.1, so it's worth checking if a newer version is available. Go to Settings > General > Software Update. Your phone will check for updates.
If an update is available, tap Download and Install. Make sure your iPhone is connected to Wi-Fi and plugged into power. Updates can sometimes temporarily affect system behavior, so getting the latest version can resolve underlying problems.
Review Accessibility and Sound Settings
Certain accessibility features are designed to adjust audio, which might be causing the low volume. Go to Settings > Accessibility > Audio/Visual. Look at the Balance slider. It should be centered. Also, check that the Mono Audio toggle is set the way you want it.
Another setting to check is in Settings > Sounds & Haptics. Under Built-In Speaker, tap Volume Limit and make sure Limit Maximum Volume is turned off, or that the slider is set to high. This limit applies to the built-in speaker and can make everything seem quieter than it should be.
Reset All Settings
If you're still having trouble, resetting all settings can help. This will revert all your preferences, like Wi-Fi passwords, wallpaper, and privacy settings, back to factory defaults, but it won't delete any of your photos, messages, or apps.
Before resetting all settings, be ready to reconnect to Wi-Fi, add your Apple Pay cards again, pair Bluetooth accessories and your Apple Watch again, set up Face ID again, and readjust custom settings. To do this, go to Settings > General > Transfer or Reset iPhone. Tap Reset, then choose Reset All Settings. You'll need to enter your passcode and confirm. Your iPhone will restart. Resetting can sometimes clear up persistent sound issues.
Rule Out a Problem App
iOS has no Safe Mode, but you can still check whether a third-party app is causing the problem. Think about what you installed or updated just before the sound problem started. You can try uninstalling recent apps one by one to see if the sound returns. If the speaker works fine during a phone call but not in a specific app like YouTube or Spotify, the issue is almost certainly with that particular app.