The 2UUL SM01 Dual SIM Checker Card lets you test two SIM card slots at once, cutting diagnostic time on network and signal complaints. Insert the card directly into the SIM tray and read the built-in LED indicators — no software, no setup, no PC connection required. The board checks SIM card functionality, signal path continuity, and detects short circuits along the SIM route, a common cause of "no network" and "no SIM" faults after liquid damage or board-level repair. A protection circuit guards against damage from incorrect insertion, so you get safe, repeatable testing on your bench. Compact and pocket-friendly, the SM01 fits any technician's toolkit and works across phone brands that use standard SIM card slots, including iPhone and Android devices.
