Service Menu or SMMI test for zenfone Service Menu or SMMI test is application by the factory to diagnose or test driver and sensor if working or not this time I will show you how to enter and try to test your zenfone device sensor and driver.. How to access Service Menu or SMMI test for Asu Zenfone open the calculator application and type .12345+ and = (equal) with this way you can now enter service menu Functionality Test Touch_Test BT_Test WifiBus_Test Battery_Test ECompass_Test GSensor_Test ModemBus_Test Keypad_Test Multitouch_Test Vibrator_Test Receiver1_Test Speaker_Test BoardMic_Test MainCamCapture_Test VGACamCamture_Test CameraFlash_Test Display_Test Headset_Test HeadseTMic_Test Proximity_Test LightSensor_Test SDcard_Test SIMcard_Test SIMcard_test2 As you can see the name of each test is already to define the functions of which test you need to deal with, with this test we can assure that our devices are healthy and all function are worki...