CoreTelephony框架的简单使用

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http://www.tuicool.com/articles/a2Uvmi

CTRadioAccessTechnologyGPRS - 2G
CTRadioAccessTechnologyEdge - 2G (sometimes called 2.5G)
CTRadioAccessTechnologyWCDMA - 3G
CTRadioAccessTechnologyHSDPA - 3G (sometimes called 3.5G)
CTRadioAccessTechnologyHSUPA - 3G
CTRadioAccessTechnologyCDMA1x - 2G
CTRadioAccessTechnologyCDMAEVDORev0 - 3G
CTRadioAccessTechnologyCDMAEVDORevA - 3G
CTRadioAccessTechnologyCDMAEVDORevB - 3G
CTRadioAccessTechnologyeHRPD - 3G (or 3.5 - eHRPD is to allow migration from CDMA EVDO to LTE)
CTRadioAccessTechnologyLTE - 4G (allowed to be called 4G by the ITU as mentioend above)

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