Quadband: Four signals of transmission (850/900/1800/1900 MHz). If your phone is quadband it can be used just about anywhere in the world.
3G: High speed data transfer. Third generation.
UMTS: Universal Mobile Telecommunications System. One of the 3G technologies.
HSDPA: High Speed Downlink Packet Access. Enhanced 3G protocol which is also known as 3.5G.
HSUPA: High Speed Uplink Packet Access. Part of the 3G protocol for uploading of data.
HSPA: High Speed Packet Access. Collection of the 3G neworks HSDPA and HSUPA.
3.5G: See HSDPA.
W-CDMA: Wideband Code Division Multiple Access. Interface found in 3G networks.
A2DP: Advanced Audio Distribution Profile. High quality audio can be streamed from one device to another over a bluetooth connection. For example, music can be streamed from a mobile phone to a stereo bluetooth headset.
GPS: Global Position System via satellite tracking.
A-GPS: Assisted GPS. Assisted GPS strengthens the performance of a GPS. For example, some GPS's cannot capture a signal in buildings or secluded areas and in these cases A-GPS strengthens these signals.
RDS: Radio Data System. RDS identifies time, radio station, and the radio programme playing.
EDR: Enhanced Data Rate. This is for faster Bluetooth data transfer.
