title: Any way to detect android device type (phone/pad) in firefox
body: <p>The userAgent of Chrome and Edge, both contains a 'Mobile' word on android phone.
  And don't contains it on android pad.</p>
  <p>But the Firefox userAgent on phone is exactly alike it on pad.</p>
  <p>So, is there any accurate way to detect the android device type for Firefox?</p>