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Das inoffizielle Android-SystemhandbuchDas inoffizielle Android-Systemhandbuch
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SanDisk Ultra microSDHC memory card + SD adapter with A1 app performance up to 120 MB/s, Class 10, U1SanDisk Ultra microSDHC memory card + SD adapter with A1 app performance up to 120 MB/s, Class 10, U1
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Amazon Basics 128GB MicroSDXC Memory Card with SD Adapter A2 U3 100MB/s Max Read SpeedAmazon Basics 128GB MicroSDXC Memory Card with SD Adapter A2 U3 100MB/s Max Read Speed
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Micro SD Card 1TB Memory Card 1024GB TF Card with Adapter Class 10 High Speed Micro Card for Android Mobile Phones / PC / Computer / CameraMicro SD Card 1TB Memory Card 1024GB TF Card with Adapter Class 10 High Speed Micro Card for Android Mobile Phones / PC / Computer / Camera
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Sandisk Ultra 128GB MicroSDXC Class 10 Memory Card and Adaptor up to 100MB/sec, U1, A1, FFP, Grey, Red 128 GBSandisk Ultra 128GB MicroSDXC Class 10 Memory Card and Adaptor up to 100MB/sec, U1, A1, FFP, Grey, Red 128 GB
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SanDisk Ultra 400GB microSDXC memory card + adapter up to 100 MB / s, Class 10, U1, A1SanDisk Ultra 400GB microSDXC memory card + adapter up to 100 MB / s, Class 10, U1, A1
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As of 2023-05-28 20:14
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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

2023-05-17

Automated Deletion

2023-05-18

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)

2023-05-20

Further Readings:

2023-05-21