Let's know all the Secret Codes of Chinese Mobile.

All Chinese mobile phone Secret Codes:

#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
AGUNBD.COM
*#0966# + Send : Set Language to Arabic CONFIRMED

More codes to reset Chinese mobile phone

#77218114#
*#881188#
*#94267357#
*#9426357#
*#19912006#
*#118811#
*#3646633#

also found these

Service codes Konka:

C926 software version: *320# Send
C926 set default language: *#0000# Send
C926 set English language: *#0044# Send

Service codes GStar:

GM208 (Chinese Nokea 6230+) engineering menu: #66#
Set language to English: *#0044#
Set language to Russian: *#0007#

Service codes  ZTE Mobile –

938737381#

2- PHONE WILL DIPLAYED DONE
3- POWER OFF YOUR PHONE AND POWER ON AGAIN

AGUNBD.COM

Alcatel E205

unlocking phone code,only press**847# without simcard
E900 software version: *#50028376263#
E900 full reset: 27673855#

Service codes Spice:

S404 enable COM port: *#42253646633# -> Device -> Set UART -> PS -> UART1/115200
S410 engineer mode: *#3646633#
S900 software version: *#8375#
S900 serial no: *#33778#

Service codes Philips:

S200 enable COM port: *#3338913# -> Device -> Set UART -> PS -> UART1/115200

Service codes “Chinese” models:

default user code: 1122, 3344, 1234, 5678
Engineer mode: #11001#
Factory mode: #987#
Enable COM port: *#11001# -> Device -> Set UART -> PS Config -> UART1/115200
Restore factory settings: #98799#
LCD contrast: *#369#
software version: *#800#
software version: *#900#

Service codes BenQ:

software version: #300#
test mode: *#30220040615#

Service codes Pantech:

software version: 0176379837#
service menu: 01763476#
reset defaults (phone/user code reset to default): 01763737381#

Service codes VK-Mobile **x, 5xx:

software version: #79#
software version: *#837#
service menu: *#85364# (hold #)

Service codes VK200, VK2000, VK2010, VK2020, VK4000:

software version: #79#
service menu: *#99988336# (hold #)
reset defaults (phone/user code reset to default): #99987328# (hold #)

Service codes Fly:

M100 software version: ####0000#
2040(i) reset defaults: #98799# Send
MX200 reset defaults: #98799# Send
AGUNBD.COM
MX200 software version: #900# Send
SL300m reset defaults: *#98799# Send
SL300m software version: #900# Send
SL500m reset defaults: *#98799# Send
SL500m software version: #900# Send
MP500 reset defaults: *#98799# Send
MP500 software version: *#900# Send
Set language to English: *#0044#
Set language to Russian: *#0007#

Service codes Konka:

C926 software version: *320# Send
C926 set default language: *#0000# Send
C926 set English language: *#0044# Send

Service codes GStar:

GM208 (Chinese Nokea 6230+) engineering menu: #66#
Set language to English: *#0044#
Set language to Russian: *#0007#

Service codes Motofone-F3:

Motofone F3 software version: **9999* Send
***300* Set SIM Pin
***310* / ***311* SIM Pin ON | OFF
***000* Reset Factory settings
***644* Set Voicemail number
***260* / ***261* Auto keypad lock ON | OFF
***510* / ***511* Voice Prompts ON | OFF
***160* / ***161* Restricted Calling (Phonebook only) ON | OFF
***200608* Send: software version
***200606* Send: software version
***200806* Send: flex version
***250* / ***251* Keypad tones ON | OFF
***470* Select time format
***500* /***501* Prepaid Balance Display ON | OFF
***520* Change language

I-mobile Inno30, 55, 89, 90, 99, 100, A10, A20, P10, Vk200

– Set full factory 741737381#
– Set full factory 7417373868#
– Set full factory 7412878#
– Set Engineer Mode 888888#
– Check software version 888837#

I-mobile 100 ,200 , 313

– Check software version #*888#

I-mobile 309, 310

– Check software version 04636#
– Test Mode 06268#

I-mobile 311

– Check software version #*878#

I-mobile 511

– Check software version 12221#

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 6848#
– Set full factory *789#
– Test Mode *#789#

I-mobile 305, 306, 315, 510, 609, 609i,516

AGUNBD.COM

– Check software version *#8375#
– Set Factory Mode 878

I-mobile 610

– Check software version *#22#

I-mobile J101, J102

– Test Mode 23638777783781#

I-mobile 502, 502i, 505, k9, 802

– Check software version 2012064636#

Some codes may not work. And there is no mobile to test yourself, so do not test all of them. If wrong, you will see the pardon.