Q:
Why is it that I can "see" the hotspot but am unable to connect?
A1: Many times the hotspot provider has set up a central high power
antenna that's easy for you to pick up on your laptop but your laptop
does not have the power to reach all the way back. --Here's a pointer, plug your laptop in.
Many times if you are operating on the battery the laptop will conserve
power on the built in WiFi radio limiting the "reach back".
A2: WiFi radios waves are "fickle" your best bet is direct line on site
from antenna to antenna. Walls, people, trees, all impact your
connection.
A3: WiFi shares the radio waves that are very close to many other
devices in your environment that can be interfering with each other.
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