Router at chest height in the middle of the house, not behind the TV
Fixes most dead corners without buying anything.
Why it works
Wifi radiates sideways in a flattened doughnut, not a sphere, and metal or a screen right next to it absorbs a lot. Height and clearance matter more than the router model.
Did it work for you?
One tap, one report per person. Reports are how we find out which fixes don't hold up.
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