Routers are devices that send out signals to connect your wireless devices to the internet. They can send out two different frequencies, 2.4 GHz and 5 GHz, at the same time.
Let's start with the 2.4 GHz frequency. It has a few advantages. It can cover a larger area, so if you have a big house or need to reach devices far away, this frequency can do the job. It's also better at going through walls and objects, so it can still provide a signal even if there are obstacles in the way. However, it has some downsides. The data speed is slower compared to the 5 GHz frequency, and it's more likely to have interference from other devices using the same frequency, like microwaves or baby monitors.
Now let's talk about the 5 GHz frequency. It has some benefits too. It can transmit data at a higher speed, so if you need fast internet for activities like gaming or streaming videos, this frequency is great. It's also less likely to have interference from other devices. However, it has a smaller coverage area, meaning the signal doesn't reach as far, and it's not as good at going through walls or objects.
So, which frequency should you choose? It depends on where and how you use your WiFi connection the most. If you have many devices in your home or live in an apartment with lots of other WiFi networks around, the 2.4 GHz band may be crowded and affect your speed and signal quality. In that case, using the 5 GHz frequency is a good idea, especially if you're close to the router. On the other hand, if you have devices that move around a lot or are far from the router, the 2.4 GHz frequency is better because it has a longer range and can go through walls more easily.
If you have a bigger house, consider Mesh Wifi, this will give your whole house coverage.