High-Speed Data denotes the mobile phone standards and technology used.
GSM and CDMA networks use different technologies.
GSM technologies are used by carriers such as AT&T and T-Mobile:
GPRS (General Packet Radio Service) - A 2G standard that provides
data rates from 56 up to 114 kbps.
EDGE (Enhanced Data rates for GSM Evolution) - Frequently referred
to as 2.75G, EDGE is an upgrade of GSM/GPRS networks providing speeds up
to 236.8 kbps.
HSDPA (High-Speed Downlink Packet Access) - A 3G (third generation)
technology which allows networks based on UMTS (Universal Mobile Telecommunications
System) to have higher data transfer speeds and capacity. Current HSDPA
deployments support down-link speeds of 1.8, 3.6, 7.2 and 14.4Mpbs.
CDMA networks are used by carriers such as Sprint and Verizon:
CDMA2000 1xRTT - A 2.5G technology capable of peak rates of 144
kbps.
EV-DO Rev. 0 (Evolution-Data Optimized Revision 0) - Uses CDMA
(Code Division Multiple Access) networks to achieve speeds of up to 2.4Mbps.
EV-DO Rev. A (Evolution-Data Optimized Revision A) - Increases
the data rates of EV-DO Rev. 0 to 3.1Mbps.
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