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    Samsung Galaxy S3 Secret Codes

    Here i am going to show you how to access the internal function of Galaxy S3 for testing the various hardware parts of your phone if it is working properly or not with the help of this secret code you can test lcd, vibration, camera, sensor (accelerometer sensor, proximity sensor, magnetic sensor), touch screen, speaker, sub key, etc… if you have any hardware problem with your galaxy S3 you can identify with this code if it is working or not to do this follow the steps below.
    First of all open your keypad


    Then dial the secret code *#0*# Now you get a screen with title LCD TEST and below that you have lots of option to test various hardware parts of your phone such as speaker, sensor, lcd, etc
    To go back use right physical button
    while testing the touch you have to touch and mark all the squares back button does not work
    Other use full secret codes for android phone tested on galaxy S3

    • * #1234# to check software version of phone.
    • *#12580*369# to check software and hardware information.
    • *#0228# Battery status (ADC, RSSI reading)
    • *#32489# Service mode
    • *#7780# factory data reset galaxy S3
    • *2767*3855# Full factory reset (Don’t dial it does not ask you to confirm unless you have problem)

    These codes will work on all the models of galaxy series.

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    65 Comments

    1. Same with kevin i have not been able to use any service codes on jellybean verizon galaxy s3 not needing them I still tried factory reset ones to check if any work my old service code was *#0011# which I have used several times prior to jellybean does anyone know the new codes?

    2. ive tired to reset my phone, i have a smasung glalaxy s3 and i dont know the reset code. can anyone tell me what to do?

    3. Actually, Due to the fact that many people discovered the codes, the updates that were done on your device by your service provider has restricted access to doing that. For many reasons that people were unlocking there phones and other things. I worked with cellphones for over 4 years, and there is a lot you can do with this codes and when people spread it, it ruins it for everyone. Only some phones can still have the access and not all.

    4. In the menu, if you press "sensor", at the bottom you'll see that black disc under magnetic sensor, with a line I assume pointing towards north. Under that line is a number (mine is 2, I've seen 3 and 1 in youtube). What is that number? A friend of mine claimed it indicate how many times your device had dropped or impacted but that doesn't make sense to me.

    5. Yes Nash the black line is definately pointing towards north
      The number represents strenght of magnetic field (1 is lowest and 3 is higest)
      Try rotaing your phone in motion of 8 this will improve your mobile magnetic strength

    6. I am using clone samsung s3 android. But the net work(signal) keeps on Fluctuating. What could be the problem???

      Please help me to solve the problem.

      Thank you

    7. I really like this phone but there are pros and cons for smartphones like this. Its just that, in terms of battery, I am more cautious. I want a phone where the battery is next to its priority. Just this recent, I bought new battery (from Amazon which is the Replacement Battery For Samsung Galaxy S3, 2100mAh Li-ion Battery by Procizion (No NFC) for my S3 and due to weird battery problems I've encounter. But as a whole, phones like these are the ones that needs to be given a fair review.

    8. Hello Heather
      These codes don't need the phone to be rooted (Though some codes dont work in some models)

      But *#0*# is the best code and it run in all devices.

      Can you please tell me that your phone is unlocked or it is of some operator (like T-mobile, verizon etc)

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