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Mobil Phone Service ProvidersCost all were within $5/mo (6%) for voice and $20/mo.(16%) for voice+data
Global System for Mobile Communication (GSM)
Note: Quad band GSM phones will usually work in Europe
Dead Cell Zones (Inverse coverage map) at DeadCellZones.com is a list of locations reported by users where their service doesn't work.
J.D. Power and Associates study Sep. 2008:
Verizon Wireless lead the way with the highest ranking in the Northeast, Mid-Atlantic, West, and tied with Sprint Nextel in the Southwest Region. Alltel ranked the highest in the Southeast, and tied with U.S. Cellular for the North Central Region.
Consumer Reports subscriber survey published
in Jan. 2009
Which carrier has the least amount of dropped calls? at mobile.aol.com had the same result. However, they say more people are switching to AT&T because of the iPhone.
Verizon: voice data Sprint: voice & data AT&T: voice data T-mobile: voice data Only sprint reprted of number of PoPs (Point of presents) or cell towers like those listed below in 2001. I think the companies are keeping that information close to the vest now. Network technologies: GSM: AT&T Wireless, and T-Mobile USA (Deutsche Telekom). GSM carriers can offer international roaming. GSM networks dominate the world market. CDMA: carriers are Sprint PCS, Verizon, Alltel and Virgin Mobile. Pay as you go: I've bought a Tracfone and I'm saving money every month, I hear that Net 10 is also a good option. Features/Services: ConsumerReports Blog: Having had Verizon and now ATT, I can confirm that Verizon tends to have more of a stranglehold on features. They commonly cripple Bluetooth, limit music and picture services to their own platform (all for a fee) and even have a 'Verizon' user interface on many of their phones. They tend to charge for everything (GPS, visual voice mail, etc.) Some may say the same thing re: the iPhone being locked into iTunes, although I find this to be less of an issue. Data: CDMA has been traditionally faster than GSM, though both technologies continue to rapidly leapfrog along this path. Both boast "3G" standards, or 3rd generation technologies. Who's Got The Fastest Mobile Broadband? at GOarticles.com ComputerWorld May, 2008 - Tests in Austin, Boston, Chicago, New York City, Portland, Raleigh-Durham, San Francisco and the Bay Area. Verizon Evolution Data Optimized (EV-DO): downloads -- typical speeds of 600 Kbps to 1.4 Mbps. uploads -- typical speeds of 500-800 Kbps. AT&T BroadbandConnect HSDPA/UMTS technology 3G (High Speed Downlink Packet Access/Universal Mobile Telephone System) 3G download throughput of 700 kbps to 1.7 Mbps upload 1.2 Mbps T-Mobile GPRS/EDGE (Enhanced Data GSM Environment) 110Kb/s download speeds of 220Kbps to 320Kbps with bursts at 384Kbps. UMTS/HSDPA - download up to 1 Mbps See: T-mobile G1 faster than iPhone AT&T G3 Sprint Mobile Broadband Card download speeds of 600-1.4 Mbps, peaking at 3.1 Mbps Sprint had the highest national average download speed (1.4 Mbps) Wireless 3G speeds forums.macrumors.com/showthread.php?t=897042 In Kansas City VZW (Verizon wireless) was in the 600kpbs range, AT&T avg more like 1600+kpbs. Verizon Mifi in NY city destroys AT&T 3G Tethering (Mobile Modem): Tethering is using your mobil phone to connect your computer to the Internet via a USB cable, PC Card (PCMCIA), IrDA (infrared wireless), Bluetooth or WiFi. You need a web-enabled cell phone with a data plan and bluetooth or a data cable connection. Phones: Blackberry Storm, .. See problems with using Nokia 3220 data cable See How to Connect Your Computer to the Internet Using Your Cell Phone at: theInternetPatrol.com and rickysays.com Femtocells: $250 box which connects to your broadband internet and acts as a mini cell tower. Offered by Srint, Verizon and AT&T Contracts:
See comparison at PC World
OldRanked by spectrum in major markets according to IDC (3Q 2001 data)
** AT&T has TDMA and AMPS at 800 MHz and TDMA at 1900 MHz
* PoP - Point of Presence (Src: Yankee Group and WirelessNewsFactor)
Note: a PoP in wireless is capacity for an individual (phone) not a connection point as in wireline.
SMR - Specalized Mobil Radio - Frequencies in the 800 and 900 MHz band
GSM phones in europe operate at 890-960 MHz
Frequencies: 824-849 MHz Cellular Mobil Telephone (AMPS, CDMA, TDMA, CDPD) 800 MHz 851-869 SMR (NEXTEL) 869-894 Cellular Mobil Telephone (AMPS, CDMA, TDMA, CDPD) 800 MHz 890-960 GSM in Europe, Israel, Far East, Australia, 1.8-2.0 GHz PCS Mobil Telephone (CDMA, TDMA, GSM) Mobil Telephone Svc listings Point.com Get Connected Omni Choice CNET