The PPC 5050 is a Windows Mobile Pocket PC Phone Edition compatible with CDMA networks, according to an article on Pocket PC Passion:
"It kinda, sorta, maybe, has GPS which is the reason for the extra, stubby antenna. OK, I admit, I sound a little iffy on the GPS at this point. It is tower based, which means it cannot be used with navigational software. Yeah, like most of you would do, I tried it just to be sure. It is active on the phone side but on the Bell Mobility side it is not active yet. It is for future Location Based Services. I am able to plug my CoPilot cabled receiver in using the XDA connector and use GPS that way.
CDMA 1XRTT ROCKS! It is actually a CDMA EV-DO capable device. That's a bit like saying "You can walk on the moon with these shoes"....like that's going to happen anytime soon. I'm seeing speeds with 1x between 70-140 kbps, averaging 80-100 kbps. This is compared to GSM/GPRS speeds (for lack of a better word) of 35 kbps. It's like going from dialup to broadband on your desktop. Another plus with Bell Mobility is their coverage is excellent."