The S111 LTE & WiFi IP Public Phone features a 2.8" 320*240 TFT color screen, 4G data connectivity, backup battery, and password-protected advanced menu. It supports multiple languages, Asterisk and BroadSoft platforms, FoTA upgrades, and remote management. Mechanical specs include a magnetic reed hook-switch, durable PC+ABS plastic body, heavy-duty handset with noise-canceling microphone, industrial metal cord, adjustable auto-hang-up, and IPX5 waterproof rating. Suitable for indoor use, it supports IC cards as per ISO/IEC 14443 A/MIFARE standards.