The most exciting AT&T ringtones are provided in the mMode service. mMode is based on the Japanese i-Mode service that NTT DoCoMo, the Japanese wireless giant, operates. In fact, NTT is a minority owner in AT&T Wireless.

Only select mMode phones are capable of downloading AT&T ringtones. At least the following mMode phones support ringtones (in fact, most of them support polyphonic ringtones):

• Nokia 3650
• Nokia 6310i
• Nokia 6590
• Siemens C56
• Motorola C333
• Panasonic GU87
• Sony Ericsson T68i
• Sony Ericsson T306
• Motorola T720

mMode is much more than just ringtones. The service also has wireless office applications, location services, games, text based information services, and more.

With mMode, you can subscribe to a variety of music services apart from ringtones. As for ringers, the AT&T ringtones for mMode come from companies such as AOL Music and Warner Music.

In order to get the mMode ringtones, you have to have a plan that supports mMode. The cheapest add-on mMode service (additional cost on top of the regular cell phone plan) starts at $2.99 a month.

Availability of mMode is currently limited to 14 major metropolitan areas in the U.S., so you have to check if these services are available in your area.