This router does things that I have not seen others do, including support a phone. This is the lowest price point unit I have reviewed to date and is one of the easiest setups. It did take me a several days to track down a landline but that was the hardest part. 
Yeacomm P21 https://amzn.to/3dbFEiv

Earlier video on 4G Routers 
https://youtu.be/AeXD-ETEOuk

4GLTE Router Shootout *new https://youtu.be/gaxjuYGI878

4GLTE Map https://www.cellmapper.net/map