1. A phone that supports both analog (AMPS) and a digital technology, such as CDMA or TDMA. The digital mode could operate in either the 800/850 MHz frequency band or the 1900 band.
2. A phone that supports both 2G and 3G technologies, such as a GSM/UMTS phone.
NOTE: This definition applies to the U.S. and Canada, and may not be accurate for other countries.