For Android 4.3 or higher. Dual SIM limited support for Android 5.1 or higher. If there is no BTS file, ARFCN and Band are available for Android 7 or higher. To see Cell Tower on map BTS file must be loaded. App could be usefull for cellular network engineers. Current features: - On-line monitoring of GSM / WCDMA / LTE network signal and services - Widgets 2x1 and 4x2 - Signal strength in Status Bar. Network info in notification. - Keep Million and more measurements in a database and view them