Hi,

I have zero upload speed on my iPhone and iPad connected to 5GHz wireless. It works fine with my laptop and android devices. When I switch my iPhone to 2,4Ghz upload is fine but I can't use full speed of my internet. I tried different settings and I noticed that problem could be with channel width because 5GHz works fine with iPhone on 20Mhz (limited speed) but doesn't work with 40 and 80Mhz. Any suggestions how fix it?