They also boast the world's largest walkie-talkie network (based on Motorola's iDEN technology) which allows Nextel users to talk for free regardless of the time of day or location.
While the Nextel Direct Connect Push-to-Talk (PTT) feature was once restricted to the somewhat separate Nextel brand, it has now been absorbed by the larger Sprint name.
Offering the most unique calling plans of the big five, Nextel caters to individuals, families and businesses with a wide variety of options to choose from.
Nextel doesn't offer as many free phones with paid plans like other carriers, but they do provide extensive coverage plans for their hardware.
As he puts it, "I am currently negotiating the right contract with the right race team to continue my climb to the NASCAR Nextel Cup Series."
The merger of Sprint and Nextel brought together the CDMA services of the former with the iDEN push to talk services of the latter.
Motorola Clutch i465 offers Nextel Direct Connect, but it also has a full QWERTY keyboard in a BlackBerry-like form factor.
Despite an optimistic outlook for the merger between Sprint and Nextel in 2005, they still haven't topped the competition.
Mergers and acquisitions in the industry created several major players: Sprint Nextel Corporation, Qwest and Verizon.
If you check out Nextel, you'll find several iDEN-based Motorola cell phones with this capability.