This obviously can’t be done with a naked eye. In order to fix the two problems above (and many others), you need to have “visibility” in the wireless spectrum and signals that exist in your space.
Two of the main factors causing WiFi problems have to do with bad placement of the WiFi router or Access Point and also bad channel selection in a frequency band that has interference from other wireless devices. Unfortunately, the nature of all wireless signals is such that they suffer from interference, they get blocked by objects in their path etc.
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