新iPad已推出，並增加了4G的連線能力，可惜香港的4G網絡還未能兼容。4G是未來流動數據的主要傳送媒介，因此下一代iPhone如外意外也會增加4G的連線能力。Cydia程式開發員最近就在iOS5.1中發現了相關的字串，證明了蘋果已開始在測試iPhone上的4G LTE技術。
程式員在最新版的iOS5.1固件中，發現如下圖的4G LTE 相關字串值，當中不能難解到將有4G連接的開關，也可以透過4G進行FaceTime等
“4G_ON_CALL_CANCEL” = “Cancel”;
“4G_ON_CALL_OK_DISABLE” = “Disable”;
“4G_ON_CALL_OK_ENABLE” = “Enable”;
“4G_ON_CALL_WARNING_DISABLE” = “Disabling 4G will end your phone call. Are you sure you want to disable 4G?”;
“4G_ON_CALL_WARNING_ENABLE” = “Enabling 4G will end your phone call. Are you sure you want to enable 4G?”;
“4G_ON_FACETIME_4G_WARNING_DISABLE” = “Disabling 4G will end FaceTime. Are you sure you want to disable 4G?”;
“4G_ON_FACETIME_WIFI_WARNING_DISABLE” = “Disabling 4G may end FaceTime. Are you sure you want to disable 4G?”;
“4G_TEXT” = “Using 4G loads data faster, but may decrease battery life.”;
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