How do i listen to messages recorded on my voice recorder

It is likely the video itself, if they did not record with proper audio settings you can only listen to what they used when they recorded the video.

Why doesn't anybody here ever say what the heck they are trying to work with?
Home recorder?
Cellphone VM
Comcast or AT&T VM
the VM system at your work?

This is like asking where is my car when we don't know what it is or where you are.

The key to getting good help is knowing how to ask a question.

Reset the tablet to default its the quickest solution.

Try recording using the voice memo to check the mic if you can then mic is working if not then either downgrade your ipsw to the previous firmware if you are sure it stopped working right after the software upgrade or replace the mic

Don't delete, just select off in settings menu

First tap on voice search option. Press on your manu button (or default start key) tap on setting > tap on phone search select your apps as u choice. Thanks

If you use only apple devices to listen to your recordings, I would stay with aiff format. The .wav file format is more universally useable, but requires more memory.

Turn the sensitivity down in the sound mixer?
Right hand mouse click on the loudspeaker icon and choose recording mixer. Adjust as required.
Hope that helps.

IF your voice is not being recognised , U can access to your system by installing another operating system in any other part of your computer through BIOS.
For this it is necessary that your BIOS must not be passward protected.
Once u get access to your system, u can make desired changes in settings to get rid of voice passward.

First, try pluging in an exteral mic to check the mic itself is not broke. Next Go to the device manager to check for driver problems (control panel, system, Hardware look for yellow ?'s) Check control panel, Sounds and Audio, audio, sound recording, volume. There are just too many ways to mess with the sound settings, and they often seem to just mute themselves!
Good luck