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HOW TO CHECK IF YOUR SAMSUNG GALAXY S3 IS AUTHENTIC OR NOT

Written By Mykiro sor on Tuesday, October 22, 2013 | 2:43 AM

These are one of the best tricks if you want to know if the SAMSUNG S3 UNIT is original even without PC.

Entering Recovery & Download Modes
How to get into Recovery Mode
  1. Unplug the USB cable.
  2. Shut down the phone.
  3. Hold down the 'HOME' + 'VOLUME UP' buttons and press the 'POWER' button for about 5 seconds to enter Recovery Mode.
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How to get into Download Mode (eg: for Odin)
  1. Unplug the USB cable.
  2. Shut down the phone.
  3. Hold down the 'HOME' + 'VOLUME DOWN' buttons and press the 'POWER' button for about 2 seconds until a WARNING! Screen appears. Press the 'VOLUME UP' button to enter Download Mode.
  4. To get out of Download Mode, simply press and hold the power button until the phone restarts.
In my opinion there is no ODIN DOWNLOAD MODE in S3 clones.
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Different SAMSUNG CODES
*#*#4636#*#* - Phone Information
*2767*3855# - Hard Reset
*#*#7780#*#* - Factory Reset
*#*#7594#*#* - Change End Call/Power Option
*#*#197328640#*#* - Service Mode 1
*#2263# - Service mode 2
*#*#273283*255*663282
*#*#* - File Copy Screen (Backup Media Files)
*#*#526#*#* - WLAN Test
*#*#232338#*#* - Shows WiFi MAC address
*#*#1472365#*#* - GPS Test
*#*#1575#*#* - Another GPS test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - Shows Bluetooth device address
*#*#8255#*#* - GTalk Service Monitor

Codes to launch various Factory Tests:

*#*#0283#*#* - Packet Loopback
*#*#0*#*#* - LCD test
*#*#0673#*#* - Melody test
*#*#0842#*#* - Device test (Vibration test and BackLight test)
*#*#2663#*#* - Touch screen version
*#*#2664#*#* - Touch screen test
*#*#0588#*#* - Proximity sensor test
*#*#3264#*#* - RAM version

Codes to get Firmware version information:

*#*#4986*2650468#*#* - PDA, Phone, H/W, RFCallDate
*#*#1234#*#* - PDA and Phone
*#*#1111#*#* - FTA SW Version
*#*#2222#*#* - FTA HW Version
*#*#44336#*#* - PDA, Phone, CSC, Build Time, Changelist number
*#272*IMEI# - To change the salescodes and reset the user data (by blade2011)
*#*0*# - general test (by lovetz)
*#272*IMEI# To change the salescodes and reset the user data

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