Change the Wi-Fi Channel Number to Avoid Interference
Choosing the Right Wi-Fi Channel Can Minimize Wireless Interference
One reason your wireless network may have poor Wi-Fi signal is because of interference caused by other devices. Since most wireless home networks transmit their signals in a narrow radio frequency range around 2.4 GHz, it’s common for devices on the same frequency to affect the wireless signal.
Fortunately, most routers give you the option to change the wireless channel so they can communicate on a different frequency to avoid interference.