A Wi-Fi booster is a boosting device that helps strengthen your existing Wi-Fi signal to avoid weak signals in multiple areas of your house. Wi-Fi booster serves the same purpose as a repeater and an extender. All three of these devices are designed to help you boost your signal and cover dead zones or weak signal areas in the house. The only difference between an extender and a booster is how they operate and get the job done. Unlike an extender, a booster doesn’t transmit its signal in the area. Instead, it intercepts the existing signal transmitted by the router and retransmits it with more strength. It increases the coverage and speed of the signal and helps you connect smart devices easily, even in the weak signal areas.