Eli5:Is WiFi an actual physical thing? If no, then how do companies charge money for it? If yes, what is it?
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You pay for internet service from a provider. The components in WiFi capable is an extra cost for some ISP’s ( internet service providers). Ergo it’s formless yes, but you pay for the privilege to use those radio frequencies.
Wifi operates on 2 specific frequencies provided by the FCC as they control which bands can be used. Those frequencies are 2.4ghz(gigahertz) & 5 ghz.
2.4 ghz works with older phones and can be set to exclude those older phones if desired. I think, been a while. You’d accomplish this by setting the modes a/b/g into a exclusion, which i think it’s just b/g but not sure. Its got a wider range and is slower than 5ghz.
5ghz has a shorter range but it’s much faster. You can force your router to only use this type.
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