Tech

Reset Android correctly and safely – this is how it works






“Factory data reset” deletes all data from the Android phone? Not correct! We will show you how to remove important and personal data thoroughly and, above all, safely. Then you can also sell your smartphone worry-free.

Let’s start with an example: You are selling your Android phone. The first thing to do is to do a factory reset and then send it to the buyer. If he is familiar with the matter, he can partially or completely restore and use your data. You can prevent that from happening with the following tricks!

Very important: back up cell phone data beforehand

Before preparing your phone for sale, remove the SIM and micro SD card from the device. Also back up your data before resetting! How to create a corresponding Android backup, whether locally, on the PC or in the cloud, is explained in detail in this article: Creating an Android backup – this is how it works

Factory reset Android

To restore the cell phone to its delivery status, proceed in the same way for all androids. First remove your Google account in the settings under

account

. The reset options can be found under different menu items, depending on the device. On a Google-owned Pixel device like the 6 Pro, you can find

Reset options

under

system

. It is best to use the search in the settings. With the command you delete all settings, apps and personal data from the internal memory.

Make sure that the option is ticked

Back up my data

activated and at

Automatic recovery

is deactivated. If you continue to use the smartphone yourself, you can of course leave the recovery activated.

Reading tip:

Delete Android apps completely – here’s how

Leave the checkmark next to the data backup activated, then reset the smartphone to the delivery status.

Enlarge

Leave the checkmark next to the data backup activated, then reset the smartphone to the delivery status.

Reset Android correctly and safely

Your data is now obviously deleted and a normal user will not be able to restore the data or will not even think about it. However, a buyer of your smartphone could recover and use your data even though you have deleted them. So if you want to be absolutely sure, this is exactly what you can avoid.

Manually:

After resetting to the factory settings, set up your smartphone again. Ideally, use a fake Gmail address. Then you manually copy random, non-private photos to the phone, create imaginary contacts and install apps that you have never used. In this way you overwrite your old data, which completely disappears from the memory and is very difficult or even impossible to restore. Then reset your smartphone again. Disadvantage of this variant: It is not guaranteed that all sensitive data will disappear completely from the device and the process is quite time-consuming.

With shredder apps:

The easiest way is to use apps that specialize in securely erasing data. The data shredders overwrite old storage space so that no data can be restored, but they also tackle the last byte.

To do this, download the iSchredder app, for example. Now you can choose from different deletion methods, whereby old data will be overwritten with random values. Then reset your smartphone (again). Now you can sell it or give it away without hesitation, without anyone else being able to restore your data.

Reading tip:

Sell ​​your old cell phone for as much money as possible

With the iSchredder app you can securely delete your data as it overwrites old storage space with new values.

Enlarge

With the iSchredder app you can securely delete your data as it overwrites old storage space with new values.

Factory status despite unknown password

If you have forgotten the set password, you can reset the password or the pattern lock via the Google device manager in the PC browser. You can then carry out the reset.

Alternatively, you can boot your cell phone into recovery mode on your smartphone – this is usually done using the power and volume up key. The key combination may vary depending on the manufacturer.

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