Yeah I'm not loving the wifi on these things.  The 2-way on the T4 works pretty damn well, though.  However, I had a problem with 2 pages on the T4...  One page was an IP cam stretched across the whole screen except for the Oasis 'quick menu' bar at the bottom.  Somehow when someone hit the IP cam button, the IP cam opened (which was just an Internet Explorer object calling up live video from an Arecont Vision cam), but the bottom part of the screen stayed at where it was on the home page.... which didn't have a Home button so it got stuck like that.  I've never seen ANYTHING like that on an RTI remote, but this is the third or fourth time I've had the Internet Explorer object cause a remote to lock up so bad I had to reboot it.