Want to forget a wifi network? You can! If you accidentally connected to a wifi network once, your device remembers it for life—right? Wrong! There’s a way to prevent that annoying wifi pop-up. Go to Settings > Wi-Fi. Find the network under the ‘Choose a Network’ heading. Select the blue arrow next to the network you’d like to remove and tap the button on the top that says ‘Forget this Network’. And it’s gone!