Not connecting to LTE with s7 edge


    Boyfriend and i both paid up front for 2 s7 edges. We contacted customer service the day after getting the devices and plans since we can rarely connect to LTE.  So we orderd an LTE booster. The booster is promoting 3 bars lte om window unit and 7 on the coverage unit. Yet, we are stilk only getting 3g-4g and rarely lte. Contacted customer service amd they cant seem to find the problem. Im 2 blocks away from in town and main roads.  Ive restarted my phone, turned data on and off, went into network settings and flipped between 4g and lte. Any suggestions?

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