What frequency does WiFi use?

Early cellular networks, including 1G, operated at a frequency of 850 MHz and 1900 MHz. Then, 2G and 3G networks operated at additional frequency bands and spectrum around 2100 MHz, and 4G LTE technology operated at additional frequency bands and spectrum around 600 MHz, 700 MHz, 1.7/2.1 GHz, 2.3 GHz, and 2.5 GHz .

Wifi transmits data at 2.4 GHz and 5 GHz radio frequencies. Whereas 3G transmits data at low frequencies ranging from 850 MHz to 1900 MHz .

For WiFi this frequency happens to be 2.4Ghz and 5Ghz . These waves are very similar to the frequency found in your microwave! Your microwave uses 2.450Ghz to heat up food and your router uses 2.412 GHz to 2.472 GHz to transmit your data over WiFi.