Volume on my iPhone decreased after update

"Volume on my iPhone decreased after update: This update has reduced the volume of my phone"

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Provide the update:

What is "this update" that you speak of? Can your volume no longer increase?

Troubleshooting iPhone Audio:

Save a Few. You might need to get a new speaker or microphone. But, before making that assertion, see if you can use the following links to troubleshoot this...

A Few Links that May Help:

• If you Hear No Sound or Distorted Sound from your iPhone, iPad, or iPod touch Speaker - Apple Support

• Control Audio Playback on AirPods with iPhone - Apple Support

• Adjust Audio and Visual Settings on iPhone - Apple Support

• Volume Output: If you Can't Hear a Person on a Call or Voicemail or if the Sound isn't Clear on your iPhone

• Volume Input: if your Microphone isn’t Working or People Can’t Hear you While you’re on a Cal

Can you give us more details?

If this is about a reduced sound for listening to music, using your AirPods, did you check the volume settings and restrictions?

Adjust the volume on iPhone - Apple Support

"Ios17.5.1 update: This update has reduced the volume of my phone"

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Have you lost data?

If so, restore your iPhone from a back up you created prior to installing the update. If you never created an update, then take this as a learning experience, knowing to always back up your iPhone, prior to installing an update.