GSM World Coverage Map and GSM Country List. most popular standard for mobile phones in the world. GSM 900 / GSM 1800 MHz are used in most parts of the world: Europe, Asia, Australia, Middle East, Africa. GSM 850 / GSM 1900 MHz are used in the United States, Canada, Mexico and most countries of S. America. This course will provide an introduction cellular communication systems that have changed our lives during the recent four decades and will become an essential and inseparable part of human life. First basic concepts of cellular communication systems are discussed, then we describe how they are applied in actual 2G, 3G, 4G and 5G Systems. Set preferred network type or Switch Change 2G to 3G 4G LTE only mode in Android Phone: First Go to Settings. Select Wireless and Networks and TAP on MORE. Scroll Down and Touch on Mobile Network. Tap on Dual SIM / SIM Settings. Select “Network Mode” or “Preferred network Type ”. Some option Will Pop in the Screen. − A GSM & UMTS world employing circuit switched (CS) networks − The chosen solution was in-band modem and CS 112 call − The in-band modem was optimised for GSM (2G) and UMTS (3G) – standard completed in 2008. eCall for 4G (NG eCall) standardisation was started 2013 (completed 2017) − There is no circuit switched domain in 4G/5G GEA/1 and GEA/2: Rather insecure encryption algorithms covering the entire GSM/GPRS/ EDGE/3G/4G spectrum, which can be easily decrypted. GEA/3 and GEA/4: Similar to the A5/3 and A5/4, the GEA/3 is based on the 64-bit version of KASUMI, while the GEA/5 offers the advanced 128-bit version. Both cover the full cellular spectrum GSM/GPRS/EDGE/3G/4G. And the demand for 4G, 5G, LTE-M, and NB-IoT will only increase in the years to come. Most 2G networks based on GSM use 850–1800 MHz or 900–1900 MHz bands. And 3G networks use bands between 850–1900 MHz or 900–2100 MHz. More advanced cellular technologies could use these same bands to provide higher data throughput and more valuable 5G Network Architecture. The fifth generation mobile network is a new global wireless standard after 1G, 2G, 3G, and 4G networks delivering up to 20 Gigabits-per-second (Gbps) peak data rates and 100+ Megabits-per-second (Mbps) average data rates. 5G will use orthogonal frequency-division multiplexing (OFDM) encoding bonded up to between 100 2G. AT&T has already sunset 2G service. T-Mobile will sunset 2G network on April 2, 2024. 3G. AT&T has already sunset 3G service. T-Mobile has already sunset 3G service. In Canada, all major carriers (Rogers, Telus, Bell) have active plans to sunset 2G, while 3G is planned to be supported until ~2025. 2G. .

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