To be considered 4G/LTE, the cellular networks must be able to transmit and receive at 100 Mbps. As opposed to the prior 2G and 3G standards, the International Telecommunications Union (ITU ) specified a strict minimum data rate for 4G. Fourth-generation wireless and long-term evolution (LTE) began to appear in 2009 as successors to 3G. 3G offered increased bandwidth and signal quality over 2G and provided a peak speed of 7.2 Mbps.
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