How to increase coverage of 5g wifi router with sim card slot?

The main advantage of 5g wifi router with sim card slot is that it is cheap. We can buy from sailsky. The most primitive option is you can buy it in bulk.
Shenzhen Shuotian Information&Technology co.,ltd.(Sailsky Wifi) is a professional manufacturer that has highly specialized in producing wireless telecommunication network equipment since 2014. Our best known products are: 4G LTE CPE Wireless Router, WiFi Access Point, Outdoor CPE WiFi Bridge, AC Con-troller&Gateway, and Commercial&Industrial Ethernet PoE Switch.

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