Can ZTE Z-917 be tethered to wireless router to increase wifi range?

oldp

    I just acquired a ZTE Z-917 internet device and T-mobile data plan. The ZTE connection to the T-mobile network is good (typically 10-20 Mbps down and 6-12Mbps upload, -90-100 dbms ) but the wifi range is week. How can I increase the wifi range? Can I tether the zte to a wireless router?

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