Low wifi speed
I bought a Ulefone Power 6 from Aliexpress, and received it on July 18, 2019. I immediately noticed that the wifi speed is slow. I did a wifi speed test, and it was shockingly low 15 to 17 mbps. All my other phones do 55 to 60 mbps. I tried so many things to no avail. Is there anyway this problem can be solved by a system update?