What is the difference between Wi-Fi and GPRS/EDGE?
SUBJECT:
What is the difference between Wi-Fi and GPRS/EDGE?
What is Wi-Fi?
FACT:
EDGE
Wi-Fi (Wireless Fidelity)
GPRS
Modem / Tethering
FIX:

What is WiFi:

  • Wireless Fidelity or commonly referred to as "Wi-Fi" uses the IEEE 802.11 standard for wireless connectivity to the Internet.
  • Wi-Fi is a service based on hotspots in public places such as Hotels, Airports, Coffee Shops and Train Stations.
  • These hotspots have access points strategically placed that will allow users with capable equipment to connect to the Internet usually for a per-day fee.
  • AT&T uses roaming providers such as Wayport and Concourse for our AT&T WiFi service hotspots.
  • What is GPRS / EDGE:
    • GPRS = General Packet Radio Services
    • EDGE = Enhanced Data rate for Global Evolution.
  • AT&T operates a GSM/GPRS network that has been upgraded on the data side for EDGE.
  • EDGE allows a high speed data transmission over existing wireless towers.
  • Although the PC cards used for AT&T's Data Network closely resemble Wi-Fi cards they are quite different in their network capabilities.
  • GPRS/EDGE cards supported by AT&T access our existing network of BTS's (Base Transceiver Stations, a.k.a. Cell sites) instead of using a local hotspot.
  • An example of PCMCIA cards for GPRS are Sierra Wireless Air Card 710 and 750. An example of a EDGE card is Sony Ericsson GC82. More information on EDGE.



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Some differences may exist for devices not purchased from AT&T.


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