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I have a Samsung watch without cellular but with bluetooth communications instead.

Can someone eloborate what the difference is between celluar connections and other wireless tech like headless phones or watches? Is there any difference except strength etc.

Never believed it before, but suddently the thought of wireless technologies being bad gave me a reality check and I realized I have never questioned it.



Bluetooth is also non-ionizing. The frequency is close frequency to WiFi: https://en.m.wikipedia.org/wiki/Bluetooth#Health_concerns


There's a difference mainly in "strength" (transmit power). The frequencies and modulations used are not all that different.

In terms of radio energy, bluetooth is the lowest, then wifi and then cellular.




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