Wi-Fi is an essential commodity in the digital age. It uses a radio frequency signal to connect all devices like laptop, mobile phones, tablet, etc. Wi-Fi signals can be picked up from any wireless capable device. Wi-Fi gives you the freedom to access the internet from anywhere within a signal range and move your devices around. It gives you the ability to access other devices connected to the same Wi-Fi. For example, multiple computers can use the same printer without wired connection.