If getting good wifi reception throughout your house is a problem, you may be interested in this article. It discusses one person's use of a new router system: Eero. I had previously read of this wifi system becoming available, but this is the first comprehensive review I've read. And here are further comments on Eero. Eero is perhaps a bit pricey compared to other routers, but if you have a wifi problem and this solves it, perhaps it's worth the extra cost.
Jim Hamm