How do I detect that my smartphone blew my breath?

[Self-answer]

How to detect blow in android device microphone

The answers to the questions in are as follows:

The job of detecting when a user flows into the microphone is
separate into two parts:(1) taking input from the microphone and(2)
listening for a blooming sound.The noise/sound of someone blooming into
The mic is made up of low-frequency sounds. We'll use a low pass
filter to reduce the high frequency sounds coming in on the mic; when
The level of the filtered signal spikes we'll know someone's blooming
into the mic.

Source:
http://mobileorchard.com/tutorial-detecting-when-a-user-blows-into-the-mic/

EDIT And here is some small SoundMeter class for Android:
http://code.google.com/p/android-labs/source/browse/trunk/NoiseAlert/src/com/google/android/noisealert/SoundMeter.java?r=2

In other words, the device does not have a breath or wind sensor.
It detects the noise of the microphone and makes the effect of the flame by listening to the sound of the breath.

I took a video on Youtube
https://youtu.be/FDg-BKu9CIE

Open YouTube on your PC and play a video called "The Sound of the Wind"
I'm listening to the sound of the wind on my Android microphone.
Result: Flame effect came out