Vineet Reynolds commented on Bug JDF-544

I'll verify why there is a difference between the two expressions, but 1280px is the new breakpoint for detecting if the device is a mobile one (or even a tablet). The choice to add tablets was done because they provide touch-support (jQuery Mobile is loaded for devices that support touch-based interaction), and because at least one tablet is present in the JBDS device definitions for BrowserSim. Loading a desktop-mode site in a tablet is not preferable, and hence the viewport dimension of tablets in landscape (1280px) were considered as the breakpoint.

I would agree that it is better to always have a desktop-mode site load on desktops, but the viewport size detection logic does not differentiate between tablets and desktops. It might be better to treat this issue as a requirement for a responsive app, since there is no easy way to differentiate between mobiles+tablets vs desktops in a quickstart. In a real site, it would be possible to augment additional checks.

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