The 2G signal booster is specifically designed to pick up weak signals from outside and amplify at your home and office. It operates within the 900MHz network frequency. It has network coverage of 1-2 rooms, meaning it is suitable for small offices and apartments and boats. The best part is that it works with major operators in the UK, like O2, Vodafone, Tesco Mobile, and Giff Gaff so you don't have to fret when you switch between mobile operators. This standard version of 2G booster ensures your devices get up to 5 bars of signal, in case your original signal outside is 4-5 bars. Don’t pine after voice clarity, have it.