Embedded fonts not working

When I debug the app on AIR simulator, the embedded font is rendered properly to all components. When I export to the device, the embedded fonts don't show up. Any suggestions?

I am using Flash Builder 4.7 and Apache Flex 4.14.1 SDK. Testing device is Samsung Galaxy Note III.

@11220649-face {

src: url("assets/SourceSansPro-Regular.otf");

fontFamily: "Source Sans Pro";

fontWeight: normal;

embedAsCFF: true;

}

src: url("assets/SourceSansPro-Regular.otf");

fontFamily: "Source Sans Pro 2";

fontWeight: normal;

embedAsCFF: false;

}

@11220649-face {

src: url("assets/SourceSansPro-Bold.otf");

fontFamily: "Source Sans Pro";

fontWeight: bold;

embedAsCFF: true;

}

@11220649-face {

src: url("assets/SourceSansPro-Bold.otf");

fontFamily: "Source Sans Pro 2";

fontWeight: bold;

embedAsCFF: false;

}

s|TextInput
{
fontFamily: Source Sans Pro;
}

s|Button
{
fontFamily: Source Sans Pro 2;
}

s|Label
{
fontFamily: Source Sans Pro;
}