Can we check the device to be smartphone or tablet in Flutter?

// The equivalent of the "smallestWidth" qualifier on Android.
var shortestSide = MediaQuery.of(context).size.shortestSide;

// Determine if we should use mobile layout or not, 600 here is
// a common breakpoint for a typical 7-inch tablet.
final bool useMobileLayout = shortestSide < 600;

Copied from https://flutter.rocks/2018/01/28/implementing-adaptive-master-detail-layouts/

Thanks @Sergi

You can use this if you don't have an access to BuildContext. I took it out from sdk/flutter/packages/flutter/lib/src/widgets/app.dart:1252.

  String getDeviceType() {
    final data = MediaQueryData.fromWindow(WidgetsBinding.instance.window);
    return data.size.shortestSide < 600 ? 'phone' :'tablet';
  }