How to Fix iPhone 7 Plus Sound Problems (Distorted Audio, No Sound)

Audio issues like distorted sound, static, low volume, or complete silence can happen even on newer devices like the iPhone 7 Plus.
While hardware problems are sometimes the cause, software glitches are often to blame—and they’re fixable at home.

Here’s a complete guide to diagnosing and solving audio problems on your iPhone 7 Plus.


Why Sound Problems Happen on iPhone 7 Plus

  • Software bugs after updates
  • Settings misconfiguration (Mute, Bluetooth, DND, etc.)
  • Corrupt apps or glitches
  • Physical damage (drops, water exposure)
  • Faulty internal components (if all else fails)

If your iPhone hasn’t been dropped or damaged, there’s a good chance you can fix the issue yourself.


Step-by-Step Solutions for iPhone 7 Plus Sound Problems


Step 1: Check the Ring/Silent Switch

The switch on the upper-left edge of your iPhone toggles between ring and silent modes.

  • If you see red, the phone is on silent.
  • Flip the switch to set your iPhone back to ring mode.

Pro Tip:
Remove any case that might block or jam the switch.


Step 2: Adjust the Volume

Maybe the volume is simply too low.

  • Go to Settings > Sounds & Haptics.
  • Drag the Ringer and Alerts slider to raise the volume.
  • Or, swipe up from the bottom to open Control Center and adjust the volume there.

Step 3: Check Bluetooth, Do Not Disturb, and Mute Settings

Sometimes your iPhone is sending sound to another device.

  • Bluetooth: Disable Bluetooth via Settings > Bluetooth.
  • Do Not Disturb: Check if DND is enabled (look for the crescent moon icon). Turn it off in Settings > Focus > Do Not Disturb.
  • Mute: Double-check the mute icon in the Control Center.

Step 4: Restart Your iPhone

Restarting can fix minor software glitches.

How to restart:

  • Press and hold the Power button until the “slide to power off” slider appears.
  • Turn the iPhone off.
  • Wait 30 seconds, then power it back on.

Step 5: Check Notification Settings for Apps

If you’re missing sound alerts from specific apps:

  • Go to Settings > Notifications.
  • Select the app.
  • Make sure Allow Notifications and Sounds are enabled.

Step 6: Reset All Settings

If sound issues started after tweaking settings:

  • Go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings.
  • This won’t erase your data, but it resets system settings like Wi-Fi passwords and preferences.

Step 7: Restore Your iPhone

As a last resort for stubborn software bugs:

Before you restore:

  • Back up your iPhone via iCloud or iTunes.

To restore:

  • Go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
  • Follow the on-screen instructions.

Or restore via iTunes:

  • Connect your iPhone to a computer.
  • Open iTunes and select Restore iPhone.

Important: If possible, set up your iPhone as new after restoring—don’t immediately restore an old backup if you suspect corrupted files.


What If Nothing Works?

If you’ve tried all of the above and sound problems continue:

  • Hardware damage is likely the cause.
  • Possible damaged parts: microphone, speaker, or audio IC chip.
  • Contact Apple Support or visit a Genius Bar.

If you’re under warranty or have AppleCare+, you may qualify for a free repair or discounted service.

6 thoughts on “How to Fix iPhone 7 Plus Sound Problems (Distorted Audio, No Sound)”

  1. I got a new IPhone 7 Plus in March of 2017. It had audio issues. I couldn’t hear the person calling and I couldn’t hear them. They sounded all wobbly and garbily. I was able to get a new I-phone 7 and it is doing the exact same thing. Anyone else having these problems.

  2. Hi ? yes I’m on my 4th iPhone 7 plus! They’ve all been faulty ie. speaker problems. Whoever I’m speaking to can hear me for a while then they say the sound becomes distorted, popping in and out, and just generally poor. And I’m always having to repeat myself!! So damn frustrating. This has been going on for two months now. I’m dealing with Complaints at Vodafone. But my phone service has been abysmal for 2 months. So frustrating. Have you tried the iPhone 7 now then instead of the ‘plus’

  3. I am having the exact same problem. I have tested it myself and you can’t hear a thing that I say. The speakers in the iPhone 7+ just do not work. Now that I read the comments, I am afraid that getting a new one will not fix the problem. Not sure what the heck to do now…

  4. I have had my iphone 7 plus for two months with poor sound quality. I use my phone for work every day and my clients tell me they cannot hear me. My voice goes in and out with static. I also sound like I am in a tunnel. Calling Iphone support often but I have not been able to fix it as yet. So sorry I bought a new phone. My 6 plus was fine.

  5. I have an iPhone 7+ and get NO sound with incoming texts. I have gone to settings/tones/etc and tapped on everything stated without results. I am going online to complain about this phone if this NEW phone will not start working better for me.

  6. go to Options>Cellular>Cellular Data Options>Enable LTE……. make sure it’s on Data ,not on Voice Data. It fixed my problem

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