[Motorola Droid RAZR] Ohmster:
This is the post that [MENTION=5267893]Crimson88[/MENTION] mentioned. ↑↑↑

I added in the URL for WhatsApp because I don't even know what that is. Your problem is that your microphone is intermittent, works sometimes, sometimes it does not pick up sound input. Casper had a similar problem, his speech was low level, hard to hear or could not hear sometimes. For him, I advised he first gather tools: a very strong magnifier, a good strong light source, and a small pick such as a pin or needle. Then to examine the mic hole at the very bottom of the phone screen, all the way down to the very bottom of the phone, below and slightly to the left of the permanent "soft" home button. Dig carefully and with very shallow pushes on the pin to clear out the hole. It worked! He removed virtual "dirt bombs" of clogs in the microphone hole and his issue cleared right up.

The Razr actually has two mics, the one on the front of the device is in the same exact place, but mirrored to the right side. Front mic for calls, rear mic for speakerphone and video cam. It seems that Crimson's mic works "most of the time" but sometimes requires a reboot to restore mic function again.

[MENTION=5267893]Crimson88[/MENTION] you must be very, very, 100% clear and accurate when troubleshooting and repairing a device like a phone. I don't know what the problem is nor do I have enough information to make a fair guess.

Here is a good post of a similar problem and how he fixed it. Worth the read:

DROID RAZR MAXX LOW MIC PROBLEM FIXED!! if who your calling cant hear you READ THIS!!

The above article is a "must read" because it describes a condition which is not that uncommon and one you would never think of, much less try to find and fix yourself. READ IT! (1st post only)

Are both mics not working or is it only one of them? How to find out? I am not sure. Probably by taking a roll of Scotch tape, putting a piece of tape over one hole at a time and trying different things to identify which hole is for what. Tape one hole at a time and test sound recorder, video cam, talk on phone, talk on messenger like WhatsApp or Hangouts, use input sound app such as gStrings or SoundHound. Yes, I think you should try SoundHound and Google Voice Search and Google Voice Typing. Make a double list, first column is for front mic, 2nd column is for rear mic.Repeat test as many times as necessary to be absolutely sure about this, save as a text file to computer. To add more data for analysis, add "Reboot" to each test to see if a reboot restores the non-working mic or not.

We are trying to find out, definitively, if the issue is one or more mics bad, one or more apps bad, other hardware bad, or if system bad. Since you have gotten identical results with two totally different Operating Systems, we could probably rule out "bad system".

A couple of useful Google searches that helped me are here and here.

I wish I could give you better help at this time, but I have been an electronic tech my whole life. The job of an electronic or other technician is 90% to find out what exactly is causing the problem, the other 10% is fixing it or replacing one or more parts. :silly:

If you gather the correct data and enough of it, you will most likely find the problem yourself or at least make it *much* easier for someone like myself or another member to help you. Now you have a comprehensive list to make. Like they say for Wonderful Pistachios, "Get Cracking". :laugh: