HUAWEI E397 lte usb stick marketing after HUAWEI E392, it is support 4G LTE and backward compatible with 3G UMTS and 2G GSM, there has several sub-models on market: HUAWEI E397Bu-501, HUAWEI E397Bu-502, HUAWEI E397Bu-7, HUAWEI E397u-53 and HUAWEI E397u-56, below list the main specifications and the network frequency support.
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