What Mobile Signal Booster Means

A mobile signal booster (also called a cell phone signal amplifier or cellular repeater) is a device that improves weak cellular signals inside homes, offices, basements, or other indoor areas. It captures weak signals from nearby cell towers, amplifies them, and rebroadcasts the stronger signal indoors — helping reduce dropped calls, improve voice quality, and speed up mobile data.

How It Works (in simple terms)

• Outdoor/Donor Antenna – Picks up the weak signal from the nearest tower.
• Amplifier/Booster Unit – Strengthens that signal.
• Indoor Antenna – Rebroadcasts the stronger signal inside your space.

These systems often support multiple network types — including 2G, 3G, 4G, and even 5G — and work with major Indian carriers like Jio, Airtel, Vodafone-Idea, and BSNL.