Mobile communications in various generations up to fifth generation (5G) developed in time have offered a gigantic change in telecommunications field by the applications of digital electronics switching with optical fibre as well as wireless technologies in the world. Presently people have all types of communication facilities to pace in the mobile communications age in 4G, 5G and higher Generation having very high speed data communications by the help of electromagnetic waves transmission-receiving system in MHz to GHz range. It has a tremendous bad effect on human and animal health due to exposure of very high frequency electromagnetic waves. Recently pandemic Coronavirus (Covid-19) disease severely intensifies due to less immunity power of human beings which is caused by 4G and 5G mobile communications system.
First Generation (1G) mobile communications, Global System for Mobile Communications (2G GSM), Code Division Multiple Access (2G CDMA) Mobile Communications, UMTS, WCDMA, CDMA 2000, Blue Tooth, WiFi, WLAN, WPAN, WiMAX, LTE, OFDM, OFDMA, Millimetre-Wave Communications, Massive MIMO, Immunity Power, Coronavirus (Covid-19) disease
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