9.4 Peripheral Circuits .......................................................................................................................................... 59
9.4.1 LCD Circuit .......................................................................................................................................... 59
9.4.2 Vibrator Circuit ..................................................................................................................................... 63
9.4.3 Receiver and Speaker ............................................................................................................................ 65
9.4.4 Microphone ........................................................................................................................................... 69
9.4.5 Headset Circuit ...................................................................................................................................... 72
9.4.6 SIM Card Circuit ................................................................................................................................... 74
9.4.7 I/O Interface Circuit .............................................................................................................................. 77
9.4.8 microSD Card Port Circuit .................................................................................................................... 78
9.4.9 FM and Bluetooth Circuit ..................................................................................................................... 79
10 Solder Points on the PCB Board and BGA Chip ................................................................. 83
11 Functional Tests......................................................................................................................... 94
11.1 Key Introduction........................................................................................................................................... 94
11.2 MMI Tests .................................................................................................................................................... 95
11.3 Voice Call Test .............................................................................................................................................. 95
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