Das inoffizielle Android-Systemhandbuch
SanDisk Ultra microSDHC memory card + SD adapter with A1 app performance up to 120 MB/s, Class 10, U1
Memory Card, Micro SD Card (A1, U3, C10, V30, 4K, 667X), TF Memory Card up to 100 m /s for Cameras, Dashcam, Switch and Smartphones, Only card 128 GB
SanDisk Ultra Android microSDHC 16 GB up to 80 MB/s, Class 10 Memory Card with SD Adapter 64GB
Vanku Android 10 Car Radio for VW Radio with Sat Nav 16GB European Maps Built-in DAB + Module Supports Bluetooth 5.0 WiFi 4G Android Car USB MicroSD 8 Inch Screen
Micro SD Card 256GB TF Card Class 10 Memory Card with an SD Card Adapter for Android Smartphones, Tablets and with a Card Adapter
Integral Micro SD Card Reader USB 3.0/USB C Type C OTG Memory Card Adapter for Micro SD, microSDHC, microSDXC
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
- Complete Wipe (5@120) 3
LastUpdate: 2016-06-21 - Shreddit - Data Eraser (4.4@6,225) 9 1
- Data Sanitizer (4.4@38) 3 1 LastUpdate: 2020-10-04 free space only
- SDelete - File Shredder (4.1@962) 3 1 LastUpdate: 2017-09-15 / SDelete Pro - File Shredder (5@13; ~EUR 2.00) 2 LastUpdate: 2017-09-17
- Secure delete (3.9@3,976) 5 / Secure delete Pro (4.3@222; ~EUR 2.25) Ǥ 6 1 files + folders
- Andro Shredder (3.7@1,843) 6 1 LastUpdate: 2018-03-20 files + free space
- Wipe files (3.6@15) 2
LastUpdate: 2016-02-22 Github; securely wipes files (but not free space) - Secure Erase iShredder (3.4@5,543) Ǥ 13 2 LastUpdate: 2020-10-30 free version sanitizes free space only
- Data Eraser cb (3.4@2,283) Ǥ 9 LastUpdate: 2020-10-30 demo limited to 10MB/day; unlock key required (cost unknown)
- Photo Recovery _ Data Recovery (3.4@1,975) Ǥ 9 3
- Phone Factory Reset (3.1@1,673) 2 1 LastUpdate: 2018-08-26
- Safe Delete (3@449) 5 3 safely deletes files (not wiping free space)
- Safe Delete (3@241) Ǥ 16 2 LastUpdate: 2020-02-05 safely deletes files (not wiping free space)
- Secure Wipe (2.7@2,542) 1 LastUpdate: 2014-06-13 sanitizes free space only
- Remo File Eraser (2.6@245) 2 LastUpdate: 2015-09-13
- Secure File Deletion (2@73) 4 1 LastUpdate: 2014-11-13
- Extirpater (0@0) 0
GitLab
Automated Deletion
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.
- Ripple: respond when panicking (3.8@189) 0 LastUpdate: 2019-09-25 Github; trigger panic actions in supporting apps
- Wasted (0@0) 2 Github; wipes device when receiving broadcast message with authentication code
De-Deletion (Recovering)
- Recycle Data Recovery Software (3.9@500) Ǥ 11 9
- DigDeep Image Recovery (3.8@359,480) Ǥ 14 6
- Dumpster - Recover Deleted Photos & Video Recovery (3.7@508,281) Ǥ 26 16 a recycle bin
- DiskDigger photo recovery (3.7@449,796) 7 1 / DiskDigger Pro file recovery (2.9@3,794; ~EUR 3.25) 7 1 Intro 7/2019
- Recover Deleted All Files, Photos, Videos &Contact (3.5@1,137) 11 4
- Deleted Photo Recovery Workshop (3.2@75,829) Ǥ 8
- Data Recovery - Retrieve Files (3.2@6,955) Ǥ 9 5
- Undeleter Recover Files & Data (2.9@41,838) Ǥ 20 21
- Recycle Bin (2.6@17,728) Ǥ 10 2
- File Recovery - Photo & Video (1.7@14,775) Ǥ 4 1 LastUpdate: 2016-05-19
Further Readings:
- 5 Android Apps That Recover Deleted Files for You (5/2021)
- Best Apps To Delete Unwanted Photos from Android Phones Parmanently (8/2018)
- Handy verkaufen? Daten richtig löschen (12/2017 - 12/2019)
- Gelöschte Bilder wiederherstellen (3/2015 - 1/2019)
- Android bereinigen: So löscht Ihr überflüssige Dateien für mehr freien Speicherplatz (9/2014 - 5/2021)
- Android zurücksetzen: So macht ihr euer Smartphone komplett platt (10/2013 - 1/2018)
- Handy-Daten sicher löschen (10/2013 - 1/2018)