1. Frequency range: GSM900. DCS1800. WCDMA21002. Network standard: 2G, 3G, 4G3. Large coverage, strong mobile phone signal repeater, covering a large area of 500-2000 square meters, no need to worry about missing calls or networks4. Can effectively enhance mobile phone signal strength, improve communication quality, reduce mobile phone radiation, and extend mobile phone battery life5. Super strong penetration ability, can…