Review on Verizon AT&T T-Mobile Sprint Cell Phone Signal Booster - Amplifies 2G 3G Voice and 4G LTE 📶 Data for Home and Office - Covers up to 4,000 sq ft - Boosts Signals for All Carriers by Chris Barreto

Working in a factory with absolutely no cellular signal. I put that in and now I always have four or five bars. The data is fast enough. I installed the antenna on the roof and aimed it at the nearest tower. The instructions are terrible, all that was needed to place the components. Pots on the device for different bandwidths are key for this to work well. There is absolutely no setup information in the book or on their website. Trial and error worked for me. Overall, I recommend this to anyone with bad cell service.