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

What is the technology behind wechat, whatsapp and other messenger apps? [closed]

The WhatsApp Architecture Facebook Bought For $19 Billion explains the architecture involved in design of whatsapp. Here is the general explanation from the link WhatsApp server is almost completely implemented in Erlang. Server systems that do the backend message routing are done in Erlang. Great achievement is that the number of active users is managed … Read more