why doesn't voice memo work on my iPhone x

You can check this support document for troubleshooting your microphone. Get help with the microphones on your iPhone, iPad, and iPod touch - Apple Support

For those apps to work, they must have access to your microphone.

Go to Apple's Home page http://www.apple.com and you can see current information. There is a link there regarding the battery issue. This is the current link. A Message to Our Customers - Apple It states there will be another iOS update in the near future.

Interesting that it does not work on another device. Mine works quite well, and I use it weekly. If the troubleshooting link I provided to you didn't help, then you should make a Genius Bar appointment at the nearest Apple Store for help from Apple.

In my case microphone works fine for other apps (Phone, Message, etc. ). My seller tried it on another new iPhone - same problems. Later seller transferred my system/apps/data to iPhone 7 - everything worked fine. Tried a few other techniques on the X

Final conclusion was something got corrupted when transferring to the X. Solution was to wipe the X clear, reload OS, recover apps from App Store. Lots of work - lost preferences, etc for iPhone and those associated with most apps - no recovered app shows any sign of corruption.

Sorry for all your probs with the x phone! I'll just stay with my 7+, at least till Apple gets all the bugs worked out. I hold my breath every time I receive an iOS update because it was one of the updates in the fall that caused me to lose my keyboard microphone, so I couldn't dictate my texts! Don't want to lose that again!! I'm really disappointed in Apple in having all these problems with the iPhone! it was such a good and reliable phone in the earlier versions, or at least I didn't hear complaints about it like I do these days! Good luck with your muting problem! Gets old, doesn't it!

Thanks for sharing that, ats2714! Well, I missed Apple's disclosure about updated iOS. What did it say? Maybe there is a newsletter I should be subscribing to so as to get these little gems from Apple?

My husband has the 6+ and has had no problems with this one, but we had to replace his first 6+ because the battery died, after only 7 months in use!! Didn't speak well for Apple's choice of battery, in my opinion.

In my case microphone works fine for other apps (Phone, Message, etc. ). My seller tried it on another new iPhone - same problems.

Thank you! It was indeed helpful! I learned a lot.