CDMA Mobile Push To Talk
Sprint will not provide phones that use its iDen network for voice and push to talk with its CDMA mobile network for mobile data. The last phones from Sprint which offered this winning combination were the PowerSource phones back in 2007.
Both Sprint and Motorola are annoying their Nextel users who were used to having the fast push to talk functionality and Direct Talk walkie talkie system off network. No other mobile network offers this combination of features which has saved lives in certain disaster scenarios where other cell networks went down. Sprint claims to have some new push to talk CDMA phones coming out in the near future, including the Kyocera DuraCore and the DuraMax, but it remains to be seen how well these phones will perform since the company's last attempt at CDMA PTT didn't work out well.