The 2G signal booster is specifically designed to pick up such weak signals as 1-3 bars outside and transform them onto solid 5 bars across the whole covered area to get qualified calls. It operates within the 900MHz network frequency. It has network coverage of 1-2 rooms, meaning it is suitable for small offices and apartments. The best part is that it works with a range of networks and major operators in the UK, like O2, Vodafone, Tesco Mobile, EE 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. Don’t pine after voice clarity, have it.