New answers tagged microphone
Yes, there is an Application Camtest Audio. You can use it for streaming audio/video over the network using WI-FI. I uploaded my app for you in this link: http://www.droidbin.com/p1alrjvilfvl31joi1evm1qbilfl3 This app is based on an Open Source library called ["Libstreaming"]
Give Microphone Guard app a try. My Mobile was working only on Loud-speaker (software issue) and it helped me.
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