A2.4 GHzconnection travels farther at lower speeds, while5 GHzfrequencies provide faster speeds at shorter range. Your choice of 2.4 GHz or 5GHz will depend on where and how you use your WiFi connection most.
A lot of electronic devices and appliances use the 2.4 GHz frequency, including microwaves, baby monitors, security cameras, and garage door openers. If you have many of these in your home, or if you live in an apartment or condo, that 2.4 GHz band is likely to be congested, which can damage speed and signal quality.