ASUS N17U WIFI

alexnt · April 24, 2020

I use asus n17u for wireless router. I noticed that my gf's laptop wireless network adapter speed connects at 72mbps but it supports b/g/n/ac protocol. After googling I changed router's channel bandwidth to 40mhz on asus and laptop's network adapter connected with 150mbps but I read that 40mhz bandwidth can be interfered by other signals so I'm not sure if this change was good idea.

Then I tested wireless speed on my p8 lite which is b/g/n and it reached about 30-32mbps downspeed. I asked my gf to do the same test with her iphone x and it reached only 18mbps. She tested several times. Then I changed from auto to enforced N and mixed 20/40mhz on router side. I got on p8 lite about 40-45mbps but on iphone she got the same speed 18mbps. The wireless log on asus showed 52mpbs rate for my p8 lite and 144mbps for iphone and tv(which also supports n and ac. I didn't checked on laptop though because it was late. Why iphone has lower speed than p8 lite and why laptops wifi adapter need 40mhz to get 15mbps speed?