How do i change the screen on my samsung d8400 mobile phone

Mobile touch screen problems solution :
1- First: Reinstall the mobile FIRMWARE ,most of mobiles touch screen problems solved by
reinstall the mobile FIRMWARE.
2-If the reinstallation of the mobile FIRMWARE didnt solve the problem that means the touchscreen
needs to be changed.

*#06# Show IMEI
*#9999# Show mobile Software Version
*#0837# Show mobile Software Version (instructions)
*#0001# Show Serial Parameters
*#9125# Activates the smiley when charging
*#0523# LCD Contrast

*#9998*228# Battery status (capacity, voltage, temperature)
*#9998*246# Program status
*#9998*289# Change Alarm Buzzer Frequency
*#9998*324# Debug Screens
*#9998*364# Watchdog
*#9998*377# EEPROM Error Stack - Use side keys to select values
*#9998*427# Trace Watchdog
*#9998*523# Change LCD contrast
*#9998*544# Jig detect
*#9998*636# Memory status
*#9998*746# SIM File Size
*#9998*778# SIM Service Table
*#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error
*#9998*786# Run, Last UP, Last DOWN
*#9998*837# Mobile Software Version
*#9998*842# Test ******** - Flash the screenlight during 10 sec and vibration activated
*#9998*862# Vocoder Reg - Normal, Earphone or Carkit
*#9998*872# Diag
*#9998*947# Reset On Fatal Error
*#9998*999# Last/Chk
*#9998*9266# Yann debug screen (Debug Screens?)
*#9998*9999# Software version
*0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1)
*0002*?# unknown Samsung's comand
*0003*?# unknown Samsung's comand
For Mobile phones SGH (R210, T100, A300...)
if Samsung code is in format *#9998*xxx#
try write in this *#0xxx#
SGH-600
SGH-2100
*2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK! but also changes IMEI to 447967-89-400044-0
*2767*2878# Custom EEPROM Reset
Samsung mobile phone codes: Samsung E700
*2767*688# remove USER CODE and SIMLOCK
Samsung mobile phone codes: Samsung V200
Unlocking:
Power on the mobile phone without SIM card and type these codes:
*2767*63342# and press green button
*2767*3855# and press green button
*2767*2878# and press green button
*2767*927# and press green button
*2767*7822573738# press button
Phone will be unlocked, but all trims are reseted !!!
Mobile phone must be fully charged
Samsung mobile phone codes: Samsung S500
Unlocking
*2767*MVT# (*2767*688#) E2P MVT Reset
*#SIMLOCK# (*#7465625#)

Change mobile's screen at the closed gsm repair center.

*#06# Show IMEI
*#9999# Show mobile Software Version
*#0837# Show mobile Software Version (instructions)
*#0001# Show Serial Parameters
*#9125# Activates the smiley when charging
*#0523# LCD Contrast
samsung mobiles

*#9998*228# Battery status (capacity, voltage, temperature)
*#9998*246# Program status
*#9998*289# Change Alarm Buzzer Frequency
*#9998*324# Debug Screens
*#9998*364# Watchdog
*#9998*377# EEPROM Error Stack - Use side keys to select values
*#9998*427# Trace Watchdog
*#9998*523# Change LCD contrast
*#9998*544# Jig detect
*#9998*636# Memory status
*#9998*746# SIM File Size
*#9998*778# SIM Service Table
*#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error

*#9998*786# Run, Last UP, Last DOWN
*#9998*837# Mobile Software Version
*#9998*842# Test ******** - Flash the screenlight during 10 sec and vibration activated

*#9998*862# Vocoder Reg - Normal, Earphone or Carkit
*#9998*872# Diag
*#9998*947# Reset On Fatal Error
*#9998*999# Last/Chk

*#9998*9266# Yann debug screen (Debug Screens?)
*#9998*9999# Software version

*0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1)
*0002*?# unknown Samsung's comand
*0003*?# unknown Samsung's comand

For Mobile phones SGH (R210, T100, A300...)
if Samsung code is in format *#9998*xxx#
try write in this *#0xxx#

SGH-600
SGH-2100

*2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK! but also changes IMEI to 447967-89-400044-0

*2767*2878# Custom EEPROM Reset

Samsung mobile phone codes: Samsung E700

*2767*688# remove USER CODE and SIMLOCK

Samsung mobile phone codes: Samsung V200

Unlocking:
Power on the mobile phone without SIM card and type these codes:

*2767*63342# and press green button
*2767*3855# and press green button
*2767*2878# and press green button
*2767*927# and press green button
*2767*7822573738# press button

Phone will be unlocked, but all trims are reseted !!!
Mobile phone must be fully charged

Samsung mobile phone codes: Samsung S500
Unlocking
*2767*MVT# (*2767*688#) E2P MVT Reset
*#SIMLOCK# (*#7465625#

hi try this
Samsung cellular phone Unlock CODE
Samsung cellular phone SGH-600 : *2767*3855#
samsung S100, S300, V200 : *2767*7822573738#
---A300, A800 : *2767*637#
---X100 : *2767*688#
samsung cellphone sgh-600 mobiles : *2767*3855#
s100,s300,v200 : *2767*7822573738#
s105 mobiles : *2767*7822573738#
After the phone reboots enter the following code : #0111*00000000#
Personalisation cancelled should be displayed. cellular phone is now unlocked
a800,a300 mobiles : *2767*637#
t100 : *2767*media# *2767*full# *2767*cust# *2767*wap# *2767*stackreset

for example stackreset = 7822573738
e700 : *2767*688#


Here some more codes for samsung T100
*#8999*228# -> Battery status (capacity, voltage, temperature) *#8999*246# -> Program status for samsung mobile phones *#8999*289# -> Change Alarm Buzzer Frequency *#8999*324# -> Debug screens of cellular phone *#8999*364# -> Watchdog *#8999*377# -> EEPROM Error Stack *#8999*427# -> Trace Watchdog *#8999*523# -> Change LCD contrast *#8999*544# -> Jig detect *#8999*636# -> Memory status for samsung phone *#8999*746# -> SIM File Size *#8999*778# -> SIM Service Table *#8999*785# -> RTK (Run Time Kernel) errors *#8999*786# -> Run, Last UP, Last DOWN *#8999*837# -> Software Version of new cellular phone *#8999*842# -> Test ******** *#8999*862# -> Vocoder Reg *#8999*872# -> Diag *#8999*947# -> Reset On Fatal Error *#8999*999# -> Last/Chk *#8999*9266# -> Yann debug screen (=Debug Screens?) *#8999*9999# -> Software version *0001*s*f*t# -> Changes serial parameters (s=?, f=0,1, t=0,1) (incomplete) *0002*?# -> unknown *0003*?# -> unknown

all samsung s300 and v200 and s500 : Free unlocking by codes
samsung mobile phone s300 and v200 :
*2767*63342# and press green button *2767*3855# and press green button of samsung cellular phone *2767*2878# and press green button *2767*927# and press green button *2767*7822573738# press button of samsung cellphone

samsung mobile phone s500 : *2767*688#

hi try these codes
*#06# Show IMEI *#9999# Show mobile Software Version *#0837# Show mobile Software Version (instructions) *#0001# Show Serial Parameters *#9125# Activates the smiley when charging *#0523# LCD Contrast
*#9998*228# Battery status (capacity, voltage, temperature) *#9998*246# Program status *#9998*289# Change Alarm Buzzer Frequency *#9998*324# Debug Screens *#9998*364# Watchdog *#9998*377# EEPROM Error Stack - Use side keys to select values *#9998*427# Trace Watchdog *#9998*523# Change LCD contrast *#9998*544# Jig detect *#9998*636# Memory status *#9998*746# SIM File Size *#9998*778# SIM Service Table *#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error *#9998*786# Run, Last UP, Last DOWN *#9998*837# Mobile Software Version *#9998*842# Test ******** - Flash the screenlight during 10 sec and vibration activated *#9998*862# Vocoder Reg - Normal, Earphone or Carkit *#9998*872# Diag *#9998*947# Reset On Fatal Error *#9998*999# Last/Chk *#9998*9266# Yann debug screen (Debug Screens?) *#9998*9999# Software version *0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1) *0002*?# unknown Samsung's comand *0003*?# unknown Samsung's comand For Mobile phones SGH (R210, T100, A300...) if Samsung code is in format *#9998*xxx# try write in this *#0xxx# SGH-600 SGH-2100 *2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK! but also changes IMEI to 447967-89-400044-0 *2767*2878# Custom EEPROM Reset Samsung mobile phone codes: Samsung E700 *2767*688# remove USER CODE and SIMLOCK Samsung mobile phone codes: Samsung V200 Unlocking: Power on the mobile phone without SIM card and type these codes: *2767*63342# and press green button *2767*3855# and press green button *2767*2878# and press green button *2767*927# and press green button *2767*7822573738# press button Phone will be unlocked, but all trims are reseted !!! Mobile phone must be fully charged Samsung mobile phone codes: Samsung S500 Unlocking *2767*MVT# (*2767*688#) E2P MVT Reset *#SIMLOCK# (*#7465625#)

hi try these codes
*#06# Show IMEI *#9999# Show mobile Software Version *#0837# Show mobile Software Version (instructions) *#0001# Show Serial Parameters *#9125# Activates the smiley when charging *#0523# LCD Contrast
*#9998*228# Battery status (capacity, voltage, temperature) *#9998*246# Program status *#9998*289# Change Alarm Buzzer Frequency *#9998*324# Debug Screens *#9998*364# Watchdog *#9998*377# EEPROM Error Stack - Use side keys to select values *#9998*427# Trace Watchdog *#9998*523# Change LCD contrast *#9998*544# Jig detect *#9998*636# Memory status *#9998*746# SIM File Size *#9998*778# SIM Service Table *#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error *#9998*786# Run, Last UP, Last DOWN *#9998*837# Mobile Software Version *#9998*842# Test ******** - Flash the screenlight during 10 sec and vibration activated *#9998*862# Vocoder Reg - Normal, Earphone or Carkit *#9998*872# Diag *#9998*947# Reset On Fatal Error *#9998*999# Last/Chk *#9998*9266# Yann debug screen (Debug Screens?) *#9998*9999# Software version *0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1) *0002*?# unknown Samsung's comand *0003*?# unknown Samsung's comand For Mobile phones SGH (R210, T100, A300...) if Samsung code is in format *#9998*xxx# try write in this *#0xxx# SGH-600 SGH-2100 *2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK! but also changes IMEI to 447967-89-400044-0 *2767*2878# Custom EEPROM Reset Samsung mobile phone codes: Samsung E700 *2767*688# remove USER CODE and SIMLOCK Samsung mobile phone codes: Samsung V200 Unlocking: Power on the mobile phone without SIM card and type these codes: *2767*63342# and press green button *2767*3855# and press green button *2767*2878# and press green button *2767*927# and press green button *2767*7822573738# press button Phone will be unlocked, but all trims are reseted !!! Mobile phone must be fully charged Samsung mobile phone codes: Samsung S500 Unlocking *2767*MVT# (*2767*688#) E2P MVT Reset *#SIMLOCK# (*#7465625#)

hi try these codes
*#06# Show IMEI *#9999# Show mobile Software Version *#0837# Show mobile Software Version (instructions) *#0001# Show Serial Parameters *#9125# Activates the smiley when charging *#0523# LCD Contrast
*#9998*228# Battery status (capacity, voltage, temperature) *#9998*246# Program status *#9998*289# Change Alarm Buzzer Frequency *#9998*324# Debug Screens *#9998*364# Watchdog *#9998*377# EEPROM Error Stack - Use side keys to select values *#9998*427# Trace Watchdog *#9998*523# Change LCD contrast *#9998*544# Jig detect *#9998*636# Memory status *#9998*746# SIM File Size *#9998*778# SIM Service Table *#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error *#9998*786# Run, Last UP, Last DOWN *#9998*837# Mobile Software Version *#9998*842# Test ******** - Flash the screenlight during 10 sec and vibration activated *#9998*862# Vocoder Reg - Normal, Earphone or Carkit *#9998*872# Diag *#9998*947# Reset On Fatal Error *#9998*999# Last/Chk *#9998*9266# Yann debug screen (Debug Screens?) *#9998*9999# Software version *0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1) *0002*?# unknown Samsung's comand *0003*?# unknown Samsung's comand For Mobile phones SGH (R210, T100, A300...) if Samsung code is in format *#9998*xxx# try write in this *#0xxx# SGH-600 SGH-2100 *2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK! but also changes IMEI to 447967-89-400044-0 *2767*2878# Custom EEPROM Reset Samsung mobile phone codes: Samsung E700 *2767*688# remove USER CODE and SIMLOCK Samsung mobile phone codes: Samsung V200 Unlocking: Power on the mobile phone without SIM card and type these codes: *2767*63342# and press green button *2767*3855# and press green button *2767*2878# and press green button *2767*927# and press green button *2767*7822573738# press button Phone will be unlocked, but all trims are reseted !!! Mobile phone must be fully charged Samsung mobile phone codes: Samsung S500 Unlocking *2767*MVT# (*2767*688#) E2P MVT Reset *#SIMLOCK# (*#7465625#)

hi try these codes
*#06# Show IMEI *#9999# Show mobile Software Version *#0837# Show mobile Software Version (instructions) *#0001# Show Serial Parameters *#9125# Activates the smiley when charging *#0523# LCD Contrast
*#9998*228# Battery status (capacity, voltage, temperature) *#9998*246# Program status *#9998*289# Change Alarm Buzzer Frequency *#9998*324# Debug Screens *#9998*364# Watchdog *#9998*377# EEPROM Error Stack - Use side keys to select values *#9998*427# Trace Watchdog *#9998*523# Change LCD contrast *#9998*544# Jig detect *#9998*636# Memory status *#9998*746# SIM File Size *#9998*778# SIM Service Table *#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error *#9998*786# Run, Last UP, Last DOWN *#9998*837# Mobile Software Version *#9998*842# Test ******** - Flash the screenlight during 10 sec and vibration activated *#9998*862# Vocoder Reg - Normal, Earphone or Carkit *#9998*872# Diag *#9998*947# Reset On Fatal Error *#9998*999# Last/Chk *#9998*9266# Yann debug screen (Debug Screens?) *#9998*9999# Software version *0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1) *0002*?# unknown Samsung's comand *0003*?# unknown Samsung's comand For Mobile phones SGH (R210, T100, A300...) if Samsung code is in format *#9998*xxx# try write in this *#0xxx# SGH-600 SGH-2100 *2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK! but also changes IMEI to 447967-89-400044-0 *2767*2878# Custom EEPROM Reset Samsung mobile phone codes: Samsung E700 *2767*688# remove USER CODE and SIMLOCK Samsung mobile phone codes: Samsung V200 Unlocking: Power on the mobile phone without SIM card and type these codes: *2767*63342# and press green button *2767*3855# and press green button *2767*2878# and press green button *2767*927# and press green button *2767*7822573738# press button Phone will be unlocked, but all trims are reseted !!! Mobile phone must be fully charged Samsung mobile phone codes: Samsung S500 Unlocking *2767*MVT# (*2767*688#) E2P MVT Reset *#SIMLOCK# (*#7465625#)

Hi try this
r all: *#06# Show IMEI *#9999# Show mobile Software Version *#0837# Show mobile Software Version (instructions) *#0001# Show Serial Parameters *#9125# Activates the smiley when charging *#0523# LCD Contrast
*#9998*228# Battery status (capacity, voltage, temperature) *#9998*246# Program status *#9998*289# Change Alarm Buzzer Frequency *#9998*324# Debug Screens *#9998*364# Watchdog *#9998*377# EEPROM Error Stack - Use side keys to select values *#9998*427# Trace Watchdog *#9998*523# Change LCD contrast *#9998*544# Jig detect *#9998*636# Memory status *#9998*746# SIM File Size *#9998*778# SIM Service Table *#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error *#9998*786# Run, Last UP, Last DOWN *#9998*837# Mobile Software Version *#9998*842# Test ******** - Flash the screenlight during 10 sec and vibration activated *#9998*862# Vocoder Reg - Normal, Earphone or Carkit *#9998*872# Diag *#9998*947# Reset On Fatal Error *#9998*999# Last/Chk *#9998*9266# Yann debug screen (Debug Screens?) *#9998*9999# Software version *0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1) *0002*?# unknown Samsung's comand *0003*?# unknown Samsung's comand For Mobile phones SGH (R210, T100, A300...) if Samsung code is in format *#9998*xxx# try write in this *#0xxx# SGH-600 SGH-2100 *2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK! but also changes IMEI to 447967-89-400044-0 *2767*2878# Custom EEPROM Reset Samsung mobile phone codes: Samsung E700 *2767*688# remove USER CODE and SIMLOCK Samsung mobile phone codes: Samsung V200 Unlocking: Power on the mobile phone without SIM card and type these codes: *2767*63342# and press green button *2767*3855# and press green button *2767*2878# and press green button *2767*927# and press green button *2767*7822573738# press button Phone will be unlocked, but all trims are reseted !!! Mobile phone must be fully charged Samsung mobile phone codes: Samsung S500 Unlocking *2767*MVT# (*2767*688#) E2P MVT Reset *#SIMLOCK# (*#7465625#)