Bluetooth can interfere with Wi-Fi, but only on the 2.4 GHz band. Bluetooth connections operate at this frequency, which is also used by smart home protocols like Zigbee and Thread, as well as microwaves. When multiple devices like smart thermostats, refrigerators, and security systems compete for bandwidth, Bluetooth devices can stress your Wi-Fi connection, leading to latency and packet loss. This can impair sensitive tasks like gaming or video calling.

The 2.4 GHz band is optimal for these gadgets since it penetrates thick walls better and functions at longer distances, albeit at slower speeds. However, newer devices adopt Wi-Fi coexistence logic to operate simultaneously without slowing each other down. Most smartphones, laptops, TVs, and other modern client devices operate on the 5 GHz or 6 GHz bands provided by dual-band or tri-band router setups.

Instead of turning off Bluetooth devices, try using a Wi-Fi analyzer app like Network Scanner to find optimal channels within the 2.4 GHz band, such as channels 1, 6, and 11. Using shielded cables near your router and spreading devices further apart can also help. In dense environments, Wi-Fi extenders or a mesh network may be necessary. In most cases, Bluetooth devices no longer pose a significant risk to home Wi-Fi performance.