How to Enable Task Manager

1. Start --> Run --> regedit
2. HKEY_CURRENT_USER --> Software\Microsoft\Windows\CurrentVersion\Policies\System --> DisableTaskMgr --> REG_DWORD and  put o as value .

How to Enable Registry Editing

1. Start-->Run-->Type Gpedit.msc
2. User Configuration -->Administrative Templates -->system --> Prevent access to registry editing tools
3. To enable regedit choose disable.

Service codes Motorola | All Chinese Mobile Code

Service codes Motorola:

Motofone F3 software version: **9999* Send

C113, C114, C115, C115i, C116, C117, C118 software version: #02#*

C138, C139, C140 software version: #02#*

C155, C156, C157 software version: #02#*

C257, C261 software version: #02#*

V171, V172, V173 software version: #02#*

V175, V176, V176 software version: #02#*

C168, W220 software version: *#**837#

W208, W375 software version: #02#*

ZTE Mobile1- *938*737381#

2- PHONE WILL DIPLAYED DONE

3- POWER OFF YOUR PHONE AND POWER ON AGAIN

alcatelE205

unlocking phone code,only press***847# without simcard

E900 software version: *#5002*8376263#
E900 full reset: *2767*3855#

Service codes GStar | All Chinese Mobile Code

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

Nokia Mobile Secret Codes

Nokia Secret Codes

*#06#   -              Display the IMEI

*#0000# -            Display the firmware version and date

*#9990# -            Bluetooth Test Mode

*#bta0# -             Display the Bluetooth MAC address

*#mac0wlan# -     Display the WLAN MAC address

*#opr0logo# -       Clear the operator logo

*#pca0# -             Activate the GPRS PCCCH support

                                         

*#pcd0# -             Deactivate the GPRS PCCCH support

*#res0wallet# -     Reset the mobile wallet

*#res0# -             Soft-format the memory

*#rst0# -              Reset to factory defaults, confirmation required

*#sim0clock# -      Display the SIM lock status

*#ssn0# -             Display the manufacturing serial number

*#war0anty# -     Display the manufacturing and repair 
                           info or total talk time on Symbian models

*efr0# -               Enable EFR encoding

#efr0# -              Disable EFR encoding

*hra0# -              Enable HR encoding