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I got the latest Huawei E5186 4G router with the E5186s-61a version. It is really better than my current Huawei B593s-22 router. It is expensive, but it deserve it! Both of them work with the same LTE frquency FDD DD800/900/1800/2100/2600MHz,TDD 2600MHz. However, the E5186 4G router is a LTE CAT6 router which could support download speed up to 300Mbps, really powerful!