We have changed routers but nothing helped

The bt broadband router is in a corner in the lounge in our house and does a good job of providing broadband at a good speed throughout the house at ground floor level unfortunately it struggles to provide the same level of internet speed in the first floor and thats where our bedroom lies

This dual mini wifi signal booster has been a real life saver in our household

I set up this wifi range extender near our bed room so it covers the entire first floor the instructions in the manual were simple to follow