When I run the game on the device, the text is substantially smaller than when it is run in an emulator. Looking around, I couldn’t find a direct fix. I suspect it would have something to do with the device resolution, but the texture elements render just fine.
Could you share some screenshots?
Edit: Damn, new users can’t put images in posts. Here is the album:
As you can see, the text is smaller, while the textures retain their size.
Emulator: 8.1 WVGA 4 inch 512MB (though this issue is present for all emulator versions I’ve tried, including 8.0 flavours)
Mobile: Nokia Lumia 822 running Windows Phone 8.0