This read-only object reports the current LTE SINR (Signal-to-Interference-plus-Noise Ratio) value, measured in dB, as reported by the modem. An administrator uses it as a more complete quality metric than SNR alone, since it also accounts for interference from neighboring cells. For example, an engineer troubleshooting spotty LTE performance in a dense urban deployment would check SINR to see whether interference from nearby cells, not just noise, is degrading the link.