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iPhone. 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.
GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM. Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.
4G provides, in addition to the usual voice and other services of 3G, mobile broadband Internet access, for example to laptops with wireless modems, to smartphones, and to other mobile devices. Potential and current applications include amended mobile web access, IP telephony , gaming services, high-definition mobile TV , video conferencing, 3D ...
iPhone OS 2 was released on July 11, 2008, at the same time as the release of the iPhone 3G, and introduced Apple's App Store supporting native third-party applications, Microsoft Exchange support, [71] push e-mail, and other enhancements.
Voice over Long-Term Evolution (acronym VoLTE) is an LTE high-speed wireless communication standard for voice calls and SMS using mobile phones and data terminals. [1][2] VoLTE has up to three times more voice and data capacity than older 3G UMTS and up to six times more than 2G GSM. It uses less bandwidth because VoLTE's packet headers are ...
An 'Access Point Name'(APN) is the name of a gateway [2] between a mobile network (GSM, GPRS, 3G, 4G and 5G) and another computer network, frequently the public Internet. [3] Some Important APN Terms: Below are some terms of the APN settings, explaining what each setting stands for: APN: The APN address of your (mobile network operator) MNOs.
In December 2014, Airtel changed its service terms for 2G and 3G data packs so that VoIP data was excluded from the set amount of free data. A standard data charge of 4 paise (0.048¢ US) per 10 KB for 3G service and 10 paise (0.12¢ US) per 10 KB (more than ₹ 10,000 (US$120) for 1 GB) for 2G service was levied on VoIP data. [110]
The iPhone is one of the two largest smartphone platforms in the world alongside Android. The first-generation iPhone was described as a "revolution" for the mobile phone industry. [5] The iPhone has been credited with popularizing the smartphone and slate form factor, and with creating a large market for smartphone apps, or "app economy".