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Das inoffizielle Android-SystemhandbuchDas inoffizielle Android-Systemhandbuch
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SanDisk Ultra 512GB Microsdxc Memory Card + Adapter up to 100 MB / s, Class 10, U1, A1SanDisk Ultra 512GB Microsdxc Memory Card + Adapter up to 100 MB / s, Class 10, U1, A1
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SanDisk Extreme microSDXC UHS-I memory card 512 GB + adapter (for smartphones, action cameras and drones, A2, C10, V30, U3, 190 MB/s transmission, RescuePRO Deluxe)SanDisk Extreme microSDXC UHS-I memory card 512 GB + adapter (for smartphones, action cameras and drones, A2, C10, V30, U3, 190 MB/s transmission, RescuePRO Deluxe)
Buy at Amazon for €84.89
SanDisk Extreme PRO microSDXC UHS-I Memory Card 128 GB + Adapter & RescuePRO Deluxe (for Smartphones, Action Cameras or Drones, A2, Class 10, V30, U3, 200 MB/s Transmission)SanDisk Extreme PRO microSDXC UHS-I Memory Card 128 GB + Adapter & RescuePRO Deluxe (for Smartphones, Action Cameras or Drones, A2, Class 10, V30, U3, 200 MB/s Transmission)
Buy at Amazon for €24.79
KiWiBiRD USB C SD Card Reader, Micro SD Card to USB Adapter Stick, Type C Memory Card Reader for SDXC SDHC UHS-I Cards Compatible with Mac iPad Pro MacBook Pro Galaxy S20/Tab S6, Android Mobile PhoneKiWiBiRD USB C SD Card Reader, Micro SD Card to USB Adapter Stick, Type C Memory Card Reader for SDXC SDHC UHS-I Cards Compatible with Mac iPad Pro MacBook Pro Galaxy S20/Tab S6, Android Mobile Phone
Buy at Amazon for €7.99
GiBot USB Type C Card Reader, SD/Micro SD Card Reader, Memory Card Reader with Micro USB OTGGiBot USB Type C Card Reader, SD/Micro SD Card Reader, Memory Card Reader with Micro USB OTG
Buy at Amazon for €9.99
As of 2022-09-27 05:58
prices & availability might be subject to change.
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Safe Data-Wipe

The day will come: your good-old Android shall get replaced by a newer model. If you no longer need the "old one", you probably want to give it away. But you certainly don't want the new owner accessing your sensible data which might have been stored on it. So what to do?

There's of course the Factory-Reset. But does it really sanitize your data in a way they cannot be (easily) restored? Unfortunately, that's not the case: though they are deleted, they are not wiped – so with the right tools, they could be restored. Admitted, that takes some little knowledge and work – but it's possible. A good counter-measure is to really "nuke" or "wipe" the storage – i.e. overwrite it with "random patterns". Corresponding guidelines are described by the National Institute of Standards and Technology (NIST) in a PDF Dokument.

Secure Wipe

2022-09-25

Automated Deletion

2022-09-25

Not quite a safe wipe as described above – but still a welcome helper: automatically do a factory-reset / delete all files, if the number of unsuccessful unlock-trials exceeds a certain threshold. That at least makes it more difficult for the attacker to access your data. Unfortunately, none of the few apps in this group is available anymore.

De-Deletion (Recovering)

2022-09-27

Further Readings:

2022-09-27