In order to determine which technology your phone carrier uses and to receive a recommendation which Mobile Repeater solution is best suited for your mobile needs please respond to the questions below. In general most wireless phone carriers use one of GSM 900, GSM 1800 or 3G technologies. These refer to the different frequencies the carriers use to broadcast their network signals. Some carriers are licensed to use both GSM 900 and 1800, which means that you will need a dual band repeater in order to ensure compatibility. If you are unable to find your country or phone carrier below please Contact Us and we will help determine which solution is best for you.