China Mobile phone Secret Code. Available for GSM and CDMA cellphones.

Default user code: 1122, 3344, 1234, 5678
Engineer mode: *#110*01#
Factory mode: *#987#
Enable COM port: *#110*01# -> Device -> Set UART -> PS Config ->
UART1/115200
Restore factory settings: *#987*99#
LCD contrast: *#369#
software version: *#800#
software version: *#900#
set default language: *#0000# Send
set English language: *#0044# Send
set English language: *#0001# Send
set English language: *#001# Send
Check software version *201206*4636#
Test Mode *201206*6268#

*### Camera Module not Ready
*#66*# Set Factory Mode CONFIRMED
*#8375# Show Software Version CONFIRMED
*#1234# A2DP ACP Mode CONFIRMED
*#1234# A2DP INT Mode CONFIRMED
*#0000# + Send : Set Default Language CONFIRMED
*#0007# + Send : Set Language to Russian CONFIRMED
*#0033# + Send : Set Language to French CONFIRMED
*#0034# + Send : Set Language to Spanish CONFIRMED
*#0039# + Send : Set Language to Italian CONFIRMED
*#0044# + Send : Set Language to English CONFIRMED
*#0049# + Send : Set Language to German CONFIRMED
*#0066# + Send : Set Language to Thai CONFIRMED
*#0084# + Send : Set Language to Vietnamese CONFIRMED
*#0966# + Send : Set Language to Arabic CONFIRMED

More some codes for reset mobile china
*#77218114#
*#881188#
*#94267357#
*#9426*357#
*#19912006#
*#118811#
*#3646633#

set English language (new firmware): *#001# Send
for N95 that trips off on making call use
*#3646633#

goto misc item 6,and goto amr and press center botton

i-Mobile GSM and CDMA Phones
I-mobile Inno30, 55, 89, 90, 99, 100, A10, A20, P10, Vk200
- Set full factory *741*737381#
- Set full factory *741*7373868#
- Set full factory *741*2878#
- Set Engineer Mode *888*888#
- Check software version *888*837#

I-mobile 100 ,200 , 313
- Check software version #*888#

I-mobile 309, 310
- Check software version *0*4636#
- Test Mode *0*6268#

I-mobile 311
- Check software version #*878#

I-mobile 511
- Check software version *1222*1#

I-mobile 301, 302,308, 508, 601, 602, 603, 604, 606, 611, 901, 902
- Check software version *#159#
- Set Factory Mode *#32787#
- Set Engineer Mode *#3646633#

I-mobile 503, 506, 605, 600, 607, 608
- Set Engineer Mode ***503#
- Set Factory Mode ***504#
- Set Auto Test ***505#

I-mobile 509, 612
- Set Factory Mode *#66*#

I-mobile 504, 505, 803
- Check software version *68*48#
- Set full factory *789#
- Test Mode *#789#

I-mobile 305, 306, 315, 510, 609, 609i,516
- Check software version *#8375#
- Set Factory Mode 878

I-mobile 610
- Check software version *#22#

I-mobile J101, J102
- Test Mode *23638777*783781#

I-mobile 502, 502i, 505, k9, 802
- Check software version *201206*4636#
- Test Mode *201206*6268#