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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Samsung > Samsung Android based phones

Samsung Android based phones Discussion and all of your questions relating to the Samsung Android based phones.

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Old 08-27-2014, 11:24   #1 (permalink)
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s3 android version 4.4.4 from at&t


how to unlock s3 i747 from at&t .android version 4.4.4.
can i downgrade to 4.1
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Old 08-27-2014, 11:58   #2 (permalink)
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Quote:
Originally Posted by neetika99 View Post
how to unlock s3 i747 from at&t .android version 4.4.4.
can i downgrade to 4.1
bro i am unlook this phone bey Z3X Box ver 4.1 and 4.3
Note = click
new security

. Read info

micro-uart cable:
1. Phone must be powered on.
2. Type *#7284# and choose Modem for UART and PDA for USB options.
3. Press "Quallcomm USB settings" and select "DM+MODEM+ADB".
4. Connect the phone to UART port.
5. Choose correct COM port in port settings
6. Press "Read info" button.
micro-USB cable:
1. Phone must be powered on.
2. Type *#7284# and choose Modem for USB and PDA for UART options.
3. Press "Quallcomm USB settings" and select "DM+MODEM+ADB".
4. Reboot phone.
5. Connect USB cable, install drivers.
6. Select diagnostic port in port settings.
7. Press "Read info" button.

Unlocking

micro-uart cable:
1. Phone must be powered on.
2. Type *#7284# and choose Modem for UART and PDA for USB options.
3. Press "Quallcomm USB settings" and select "DM+MODEM+ADB".
4. Connect the phone to UART port.
5. Choose correct COM port in port settings
6. Press "Unlock" button.
micro-USB cable:
1. Phone must be powered on.
2. Type *#7284# and choose Modem for USB and PDA for UART options.
3. Press "Quallcomm USB settings" and select "DM+MODEM+ADB".
4. Reboot phone.
5. Connect USB cable, install drivers.
6. Select diagnostic port in port settings.
7. Press "Unlock" button.
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Old 08-27-2014, 12:09   #3 (permalink)
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yes i try *#7284# and *#8080# and #9090# but no option coming
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Old 08-27-2014, 12:28   #4 (permalink)
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@neetika99
this is a new security phone and not supported yet with Z3x
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