Why does UMTS in phones at max 0.25 Watts @ 2GHz work over several blocks of houses or huge distances in the fields outside town very well, inside, outside, in the car, definitely not in a line of sight at roughly 7MBit/s and my WLAN at home barely makes it through 3 walls, 0.1 Watt @ 2.4GHz?
by /u/[deleted] in /r/askscience
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