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i live in a mobile home and i use a friends wifi but i dont think his wifi signal is strong enough to run my fire tv stick from across the street can i fix this problem with a wifi antanna if so what is the best antanna to use

Get one of these: https://www.amazon.com/gp/aw/d/B00L0YLRU… That will not only improve the fire stick, but your entire home. The higher you place it, the better signal you will get. All it does is connect to your friends wifi and amplify it. Some simple setup is necessary. Hope this helps!

I bought a Linksys Booster and it helped but is not cure all ! It was easy to install .

Aluminum foil. see https://www.sciencealert.com/simple-hack