 Among other improvements : 320x320 and 800x480 ( WVGA ) screen resolution support ( The S01SH or " Em One " by Sharp was the first and only device to have an 800x480 screen on WM5 ) , Improved Remote Desktop access ( Available for only certain Pocket PCs ) , Customer Feedback option , Smartfilter for searching within programs and Unlicensed Mobile Access ( UMA ) support for select operators 
