Operating Frequency Bands are the key part of the specification of every mobile phone. The certain supported frequency decides the handset is capable with particular network carrier.
2G, introduced in 1992, was the second generation of cellular telephone technology. The network was the first that offered data services and Message/SMS text. 2G capabilities are GSM 900, GSM 1800.
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3G Network succeed on 2G, this network resolved the lower data transferring issues, 3G offers faster data transferring rates and it allows making video calls, this technology made it handy use in modern smart phones that requires high speed of internet connection. 3G capabilities are UMTS 900, UMTS 1800.
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4G, the fourth and latest generation of mobile communication standards, it provides ultra broadband internet access for mobile phone devices, the high data transfer rates makes it suitable for use in wireless USB modems on laptop. 4G capabilities are LTE 1800.
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