I'm planning to use Jasper for voice control on my Raspberry Pi B+.
However, there are no microphone sockets and I do not have a USB mic.
I would like to know if there is any way I could use my android phone (Note 3) as a mic (wired or wireless).
Use HTML5 WebRTC to record audio, That way you can use any modern device (not iOS). The web browser can capture audio and send it to the pi via apache/lighttpd/etc. There are already many stackoverflow examples.