'm trying to increase the signal of it with foil, but I don't know where it's located, is it on the top part of the monitor?

Do you think that trick with wrapping a ethernet cable around my cellphone and plugging it in my laptop will help boost Wi-Fi bars.

I think that would help you. But am wondering why do you need to do so? Toshiba laptops catch a very good signal of wi-fi network. Toshiba offers great deals for its customers. It is known for its performance.
Toshiba Coupon