How to Delete Your Data On your Smartphone

How to delete your data on your Smartphone -Modern operating systems share stored data when you delete only to the rewrite - their position in the store is marked as free. This "logically deleted" data but not overwritten, can be reversed this process and restore the data often even months later.

To ensure a "physical deletion" of data, all bits and bytes of the deleted file must be newly described. This process guarantees that data cannot be recovered. After secret service standard, even a multiple overwriting is necessary to ensure 100% data security.

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The flagship Microsoft Lumia 950 XL is the test loser may 2016 of the Stiftung Warentest test. (Source: manufacturer) The Huawei Ascend Mate 7 (390 euros) is very chic, made of metal and clean. (Source: manufacturer) "Maués cheap mobile": this was the judgment of Stiftung Warentest for the LG Bello II in may 2016 (source: manufacturer) the Simvalley SP 144 of the catalogers Pearl conceded a damning judgment of test in the journal c't. (Source: Pearl) (Source: manufacturer) Even the 75 euros for the cheap Smartphone Samsung Galaxy Star S5280 want to be well-planned, because the equivalent is tenuous: "hands off of this piece of plastic!", ruled the computer screen after a test. (Source: manufacturer) (Source: manufacturer) The Microsoft Lumia 535 is the "chip"-Bestenliste of all smartphones on the 111th and last place. (Source: manufacturer)
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Reset to factory settings: only for iOS and BlackBerry sufficient

For users of Apple and BlackBerry devices, resetting their smartphones is a good and easy way to bring about a physical data deletion. A "factory reset" leads to the secure deletion of data. Worse are Android users: results of researchers showed that data usually quite simply can be restored by Android devices.

This is also because that Apple (and also the BlackBerry) have greater control over the devices than Google. Through hardware-based encryption mechanisms it is enough, for example, IOS, to delete the key, to make useless all encrypted with this key, stored data. This iOS necessary 9 are the following:

Settings => General => reset => content & delete settings

Otherwise it looks like Android: encryption is not enabled by default part of the Android. As a result, sensitive data with the help of IT forensics tools freely available on many Android smartphones can be restored even after multiple factory reset.

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Android: Encrypt first, then reset

For Android users, we recommend manual turn on encryption, which is not enabled by default. After a reset to factory default settings will cause Android safe and sustainable deletion of the data by the deletion of the key. As the user takes a direct impact on the level of safety of the Chiffrierungs key through his passwords, these should be as complex.

The following steps are necessary to enable the encryption on Android:

Encrypt settings => security => device

After a factory reset leads to the deletion of the data:

Settings => secure & reset => reset to factory settings

Apps in the Google play store that override such parts of the store that are marked as "free" offer an alternative path for the deletion of the data. This ensures the removal of already deleted data though, is however not applicable to the existing data. A factory reset is recommended therefore that before such a app on the Android Smartphone is running, that is "almost" free of private data.

Finally, it should be still pointed out that another SIM and microSD cards are removed from the device, before being passed on to the new owner. Then can the next Smartphone of conscience come and filled with sensitive, but encrypted data will be.

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