A phone that supports four different radio frequency bands. Different mobile phone networks around the world use different bands. A phone can only be used on a network if it supports the correct ...

This device combines a Windows Mobile 5 PDA with a quad-band GSM phone. Key features include a slide-out text keyboard, 802.11g Wi-Fi, EDGE, Bluetooth, speakerphone, and a miniSD memory card slot.

Low-cost RF tuner for DAB / T-DMB, FM and GPS applications is highly integrated and does not need external SAW filter. Integrated with LNAs, RF / BB AGC, down conversion quadrature mixers, RF / IF ...

Quectel Wireless Solutions has introduced the LG680P, a multi-constellation, quad-band GNSS module designed to provide high-precision positioning for applications such as precision agriculture, ...

BARCELONA, Spain--(BUSINESS WIRE)--Quectel Wireless Solutions, a global leader in IoT and GNSS technology, has announced the launch of the LG680P, a multi-constellation, quad-band GNSS module ...

Refers to GSM cellphones that can be used worldwide because they support all four GSM frequency bands (850, 900, 1800 and 1900 MHz). See dual-band handset. THIS DEFINITION IS FOR PERSONAL USE ONLY.

Refers to a mobile phone that supports the four major GSM frequency bands (850/900/1800/1900 MHz), making it compatible with all the major GSM networks in the world. The 850/1900 MHz bands are ...