Help How to change band

[Noze wayB]

How to change band po sa Redmi note 9s. Ang hina po ng speed pero full bars naman signal ko.
Sana may makatulong pano mag change band

 

[Epicskeller]

same tayo redmi note 9s. globe network ko full bar lahat ng signal pero mabagal. May dinownload akong app "Activity Launcher". baka makahelp sayo