What does the "secret code" *#9900# really do to your Android device?

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krissyrobin87

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Sep 24, 2017
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Continuously getting the alert for insufficient storage space available... I have an SD card in place and have moved as much as I can but still continue to be short on space. I found numerous videos on YouTube suggesting this "secret code" (from your dial pad screen) *#9900# is this a "safe" procedure to attempt in order to increase storage space?
 
Solution
It won't really increase your storage space. It is more for if the system is registering the amount used incorrectly.

You would clear up more space by either setting the SD card as "Internal" storage, if your device will allow it, or moving all photos, videos, music, etc., (not apps) to the SD card. I would also suggest uninstalling apps you never or rarely use. You may want to also install an app like "Clean Master" or something similar that can keep an eye on your system and notify you when apps are taking up space but don't need to be.

First, you need to be using a phone that is running at least Android "Marshmallow" (or newer) or be able to upgrade to it. Second, you will need the instructions I am including below. And third, you...
It won't really increase your storage space. It is more for if the system is registering the amount used incorrectly.

You would clear up more space by either setting the SD card as "Internal" storage, if your device will allow it, or moving all photos, videos, music, etc., (not apps) to the SD card. I would also suggest uninstalling apps you never or rarely use. You may want to also install an app like "Clean Master" or something similar that can keep an eye on your system and notify you when apps are taking up space but don't need to be.

First, you need to be using a phone that is running at least Android "Marshmallow" (or newer) or be able to upgrade to it. Second, you will need the instructions I am including below. And third, you need a phone that has not been restricted by the manufacturer from making this change. Which does happen.

NOTE: If any of the steps are missing on your phone, or they don't work for you, then you have a phone that either has an older Android version or has been restricted by the manufacturer.


How to turn the "External" SD card into "Internal" storage on "Marshmallow".

NOTE: Please be sure you start with a blank SD card. It needs to be blank because when the card is converted to "Internal" storage, it will be formatted (wiped) and encoded (making the cards data only readable by that device).

1. Go to device “Settings”, then select “Storage”.
2. Select your "SD Card", then tap the “three-dot menu“ (top-right), now select “Settings” from in there.
3. Now select “Format as internal”, and then “Erase & Format”.
4. Your SD Card will now be formatted as internal storage.
5. Reboot your phone.

NOTE: If you don't reboot the phone, many things may not work correctly, so make sure you do.


How to turn the "External" SD card into "Internal" storage on "Nougat".

IMPORTANT NOTE: Be sure you start with a blank SD card. When the card is converted to "Internal" storage, it will be formatted (wiped) and encoded (making the cards data only readable by that device), so anything on it prior would be gone.

1. Go to "Settings", and then select "Storage & USB".
2. At the bottom of the list you should see the SD card's details, including the option to format it and make it "Internal" storage.
3. Once this is done, reboot the device and you can start running things from the card.

If you don't reboot the phone, some things may not work correctly, so make sure you do the reboot.

 
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Feb 10, 2018
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If i move memory card what happen?


 
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