Hi folks,
what media query do you use that covers the majority of the smartphones?

I use this and work pretty well but some of the smartphones with bigger screens are displaying the desktop layout instead of the mobile one:

@media only screen and (max-width: 479px), screen and (min-device-width:719px) and (max-device-width:721px) and (orientation: portrait) and (-webkit-min-device-pixel-ratio: 2) {

Cheers,
Vic