Describe the failure
Record where it happens, when it happens and which applications suffer. A dropped call and a slow download may point to different causes.
Measure the radio space
Coverage, noise, channel width and competing networks all affect usable capacity. More transmit power is not always better.
Check what sits behind Wi-Fi
Switch ports, cabling, VLANs, DHCP and internet capacity can create a wireless symptom even when the radio link looks healthy.


