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.

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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.

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

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.