1. Dual SIM Compatibility: Supports testing two SIM cards simultaneously, making it convenient for users to test different cards functionality and status quickly. 2. No complicated setup or software installation is required; insert the card and start testing immediately, making it user-friendly. 3. Quick Response: Test results are displayed almost in real-time, saving users time and increasing work efficiency. 4. Multi-functional Testing: Not only detects basic SIM card functions but also supports testing the signal strength and stability of the SIM card. 5. Portable Design: Compact and lightweight, easy to carry, making it suitable for mobile device repair engineers and phone enthusiasts to use anytime, anywhere. 6. LED Indicator Display: Equipped with intuitive LED lights that show the test status at a glance, making operation simple and clear. 7. Anti-misoperation Design: Built-in protection circuits prevent SIM card damage due to incorrect operation, ensuring safe testing.