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In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA.
The iPhone 3G is a smartphone designed, developed, and marketed by Apple Inc. It is the second generation of iPhone, successor to the original iPhone, and was introduced on June 9, 2008, at the WWDC 2008 which took place at the Moscone Center in San Francisco .
Access Point Name. An Access Point Name ( APN) is the name of a gateway [ 1] between a mobile network ( GSM, GPRS, 3G, 4G and 5G) and another computer network, frequently the public Internet. [ 2] A mobile device making a data connection must be configured with an APN to present to the carrier. The carrier will then examine this identifier to ...
Verizon was the first to launch a 3G network in the U.S. in 2002, during a time when the BlackBerry was the top smartphone to own and we were five years away from the arrival of the iPhone.
Mobile phone signal. A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink ). Depending on various factors, such as proximity to a tower, any obstructions such as buildings or trees, etc. this signal strength will vary.
Reportedly uses Sprint as primary network and only roams to AT&T when needed; data speeds limited to 128 kbit/s when roaming. Also automatically connects to Altice WiFi access points when in range; service then provided over Wi-Fi, not 4G LTE. $10/mo. discount for Optimum & Suddenlink customers. [344] [346] [348] [349] [350] OTG Mobile
Cricket Wireless is an American prepaid mobile virtual network operator (MVNO), wholly-owned by AT&T. It provides wireless services to ten million subscribers in the United States. [ 1] Cricket Wireless was founded in March 1999 by Leap Wireless International. AT&T acquired Leap Wireless International in March 2014, and later merged Cricket ...
Femtocell. In telecommunications, a femtocell is a small, low-power cellular base station, typically designed for use in a home or small business. A broader term which is more widespread in the industry is small cell, with femtocell as a subset. It typically connects to the service provider's network via the Internet through a wired broadband ...
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