The SNYPER-IoT Graphyte (GL) is a high-performance cellular signal analyzer and logger for CatM, LTE-M, NB-IoT, and 2G/GSM networks. It offers four survey types: full (LTE-M, NB-IoT, 2G), LTE-M only, NB-IoT only, and GSM only, storing up to 100,000 surveys. It measures signal strength and network parameters, supporting single and multi-cycle surveys to identify base station reliability. Results in CSV or HTML aid in antenna placement and site surveys, enhancing IoT network optimization.