4 types of devices that slow down your Wi-Fi the most

Many of you are probably old enough to remember a time when, if you wanted to get onilne, someone making aphone call in the other room was enough to stop you. It was the nature of dial-up modems, of course — there just wasn’t a way of transmitting both voice and digital data over the same landline. I’m not even sure how many games of Doom and Duke Nukem 3D were blocked because my parents were talking to friends and family.