Operator acceptance certification is a test requirement formulated by major operators to ensure the quality of network access communication products and improve the actual network compatibility and security of products, which is different from compulsory certification and consistency test requirements. Usually, carriers require terminals to complete carrier certification tests in carrier labs or third-party authorized labs before entering their networks. The test content usually includes antenna performance test, audio-related test, reliability test, field test, interoperability test, protocol test, RF test, peripheral interface test (USB, Wi-Fi, Bluetooth), power consumption test, carrier service test, user experience test, etc. At present, mainstream operators in Europe and the United States, such as AT&T, T-Mobile, Orange, and Vodafone, have their own carrier certification tests. From the current development, operators in North America are more focused on laboratory testing and field testing, with detailed test definitions, relatively complex certification processes, and test cycles of several months, which have high requirements for terminals. Operators in Europe, on the other hand, pay more attention to OTA, SAR and audio indicators, and often develop special test methods or strict test indicators for these tests. In addition, European operators such as Orange also have dedicated test cases for their own customized applications.