Four Bands GSM Network Booster Smart Led Screen

Full-Frequency Coverage for Reliable Connectivity This booster supports quad-band GSM signals, making it compatible with a wide range of cellular networks. Whether you’re using a 2G device for voice calls, a 3G device for internet, or a 4G LTE device for data-heavy tasks, this unit ensures stable performance across all connected devices within the coverage area. It automatically detects and amplifies weak signals on all four supported bands, strengthening network coverage inside buildings where signal strength may otherwise be insufficient due to structural barriers or location challenges. The booster is suitable for areas up to 200–500 square meters, depending on external signal strength and installation condition