对X876有效的测试码如下：（进入拨号模式
*983*0#                 测试模式菜单——最有用的一个，似乎包含了所有的测试项目。
*983*7#                 4菜单(Version/IMEI/IMSI/BT address)
*983*154#         test         "测试" 菜单(12:Self-starting/Software Version/Hardware Version/PSN/Test Flag/[Completed]/Board Serial/Bluetooth Address/SMS security/SMS Registration Status/Flash Type/PRL Version/Serial Configuration)
*983*07#         10测试菜单 (10:LCD/Ringer/Vibrator/Key Test/Audio Loop/Headset Test/FM/Camera/SD/Calibration)
*983*57#         Factory Reset 恢复出厂值
*983*5182#         Dev Info 设备信息
*983*7469#         SHOW   自动测试每一项
*983*21#   回音测试   
*983*25#   Battery Info 电池信息   
*983*26#   BackLight Test 背景灯测试
*983*31#   OLED Test 屏幕测试  
*983*36#   FM         FM收音机测试
*983*84#   Ringer Test 扬声器测试   
*983*86#   Vibrator & LED Test 震动和屏幕测试
*983*477# GPS    GPS测试
*983*27274#         CRASH   Reboot   重启
*983*3640*01# IMSI
*983*850#   Radio Test 0 好象是进入飞行模式
*983*473#   Camera 进入相机
*#23#                 Video Camera 进入摄像
*#25#                 FM Test FM收音机测试
*#06#              IMEI
*#18#                 LED Test 屏幕测试
*#19#                 TouchPaint Test 触摸屏幕测试（这个有点意思）
经过实验，发现这个列表里的内容几乎100%都是有效的，有些也不太敢试，全部列在这里，供大家参考吧。（部分我测试过的已经移到上面）
*983*07*01#                 Headset Test
*983*07*02#                 Key Test
*983*3470#                 LCD Test
*983*81#                 SD Test
*983*890#                 -


*983*26*#                 Radio Test 1
*#06#                 IMEI
*#08#                 Test Flag [Note: requires QcNvTest.apk in /system/app]
*#09***#                 BT Test
*983*1275#         _ASK         Dev Info
*983*3640#         DOH+         Phone Info (inc ping test, radio on/off)
*983*636#         MEM         Memory Test
*983*28#         BT         Emode BT Test
*983*21#                 Audio Loop Test
*983*70#                 Automatic Inspection
*983*10#                 Delete (Touchscreeen) Calibration File
*983*2726#                 SIM Contacts Op 1
*983*37#                 SIM Contacts Op 2
*983*6726#                 SIM Contacts Op 3
*#26***#                 Sensor Test
*983*7936#         QXDM         Save Q
xdm
in log system
*
#27***#
                 Compass Test
*983*87274#         USBSI         USB Switch Test
*983*06#                 BT Test
*983*564738#         LOGSET         LOG Set (inc sys_rw)
*983*93#                 FCC Test [Note: requires fcctest.apk in /system/app]
*983*2377#         CFQP         Call Forwarding Query with PowerOn
*983*24474636#         CHIPINFO         Chiper Test (chip info) [Note: requires ChiperTest.apk in /system/app]