Das inoffizielle Android-Systemhandbuch
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 64 GB Android microSDXC Memory Card + SD Adapter up to 80 MB/s Class 10
SanDisk Ultra 512GB Microsdxc Memory Card + Adapter up to 100 MB / s, Class 10, U1, A1
ARCANITE microSD Memory Card with Adapter 64 gb
Haihuic Europe GPS Navigation Map Android System 8GB Memory Card for In-Dash Car DVD Player Stereo Radio GPS Navigator
iiyama ProLite LE5540UHS-B1 Digital Signage Display AMVA3 LED Panel 4K UHD (VGA, DVI, HDM, USB 2.0/3.0, RS-232c, RJ45) Media Player, Android OS, Micro SD Slot, 18/7, Black
Kootion Micro SD Card 64GB Memory Card Class 10 U1 Mini SD Card MicroSDXC A1 4K UHS-I Memory Card up to 80MB/s, Pack of 2 MicroSD Card for Cameras Mobile Phones Tablets and Android Smartphones
SanDisk Extreme 128 GB microSDXC memory card and SD adapter with App Performance A2 and Rescue Pro Deluxe, up to 160/90 MB / s, class 10, UHH-I, U3, V30
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
- Data Eraser cb (5@1,008) Ǥ 9
demo limited to 10MB/day; unlock key required (cost unknown) - Secure Erase with iShredder 6 (4.5@4,894) Ǥ 13 2
/ iShredder 3 PRO (4.4@15; ~EUR 5.50) 5 2 / iShredder™ 6 Enterprise Eraser (4.1@103; ~EUR 9.50) Ǥ 12 free version sanitizes free space only - Phone Factory Reset (4.4@1,402) 2 1 LastUpdate: 2018-08-26
- Data Sanitizer (4.4@37) 4 1 free space only
- Shreddit - Data Eraser (4.3@5,137) 9 1
- Safe Delete (4@374) 5 3 LastUpdate: 2018-04-02 safely deletes files (not wiping free space)
- Secure Bulldozer (Wipe Remove) (3.9@187) 3 LastUpdate: 2014-09-05
- Fastwipe (3.9@85) 1 LastUpdate: 2014-03-18 sanitizes free space only
- Secure delete (3.8@3,945) 5 1 / Secure delete Pro (4.4@211; ~EUR 2.25) Ǥ 6 1 files + folders
- Safe Delete (3.8@221) Ǥ 16 2 safely deletes files (not wiping free space)
- Andro Shredder (3.7@1,778) 6 1 LastUpdate: 2018-03-20 files + free space
- FShred - Wipe Free Space (3.7@165) 2 LastUpdate: 2017-03-26 sanitizes free space
- Secure Wipe (3.6@2,488) 2 LastUpdate: 2014-06-13 sanitizes free space only
- SDelete - File Shredder (3.6@889) 4 1 LastUpdate: 2017-09-15 / SDelete Pro - File Shredder (3.6@12; ~EUR 2.00) 2 LastUpdate: 2017-09-17
- Wipe files (3.6@15) 2
LastUpdate: 2016-02-22 Github; securely wipes files (but not free space) - Permanent Delete Files – Data Eraser (3.5@1,451) Ǥ 9 5
- Super Erase (3.3@559) Ǥ 6 3 LastUpdate: 2019-12-21 files + folders; free space requires in-app payment (go pro)
- Remo File Eraser (3.3@232) 2 LastUpdate: 2015-09-13
- Complete Wipe (3.3@117) 3 LastUpdate: 2016-06-21
- Secure File Deletion (3.3@73) 4 1 LastUpdate: 2014-11-13
- SHREDDER : Permanent Delete - Safe & Secure Erase (3.2@734) Ǥ 11 6
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 (4.2@162) 0
LastUpdate: 2019-09-25 Github; trigger panic actions in supporting apps
De-Deletion (Recovering)
- Recovery software : Recover Deleted Files (4.5@6,477) Ǥ 9 6
- Recover My Files (4.2@8,977) 10 3 LastUpdate: 2018-06-21
- Dumpster - Recover Deleted Photos & Video Recovery (4.1@429,129) Ǥ 24 16 Intro 7/2014; a recycle bin
- DigDeep Image Recovery (4.1@345,844) Ǥ 14 8
- Restore Deleted Photos & Image (4.1@5,350) 4 1 LastUpdate: 2017-05-12
- File Recovery - Photo & Video (4@14,483) Ǥ 5 1 LastUpdate: 2016-05-19
- Recover Deleted Pictures (4@4,337) 5 4 LastUpdate: 2017-12-30
- Deleted Photo Recovery Workshop (3.9@72,252) Ǥ 7 LastUpdate: 2020-01-13
- Data recovery: disk digger, recover deleted data (3.9@1,481) 6 3 photos only
- RECYCLING BIN (3.9@178) 8 1 LastUpdate: 2017-08-11
- Data Recovery : Recover Deleted Photos (3.9@170) 10 3 LastUpdate: 2018-01-08
- DiskDigger photo recovery (3.6@3,012) 7 1 / DiskDigger Pro file recovery (2.7@3,559; ~EUR 3.25) 7 1 Intro 7/2019
- Recover Deleted All Files, Photos, Videos &Contact (3.5@1,098) 12 4
- Undeleter Recover Files & Data (3.3@40,619) Ǥ 20 26
- GT SMS Recovery (3.3@2,471) Ǥ 10 LastUpdate: 2016-06-30
- dr.fone - Recovery & Transfer wirelessly & Backup (2.7@32,862) Ǥ 6 4
- Recycle Bin (2.7@48) Ǥ 10 3
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)
- Handydaten sicher und endgültig löschen (9/2017 - 1/2018)
- Gelöschte Bilder wiederherstellen (3/2015 - 1/2019)
- Android bereinigen: So löscht Ihr überflüssige Dateien für mehr freien Speicherplatz (9/2014 - 12/2018)
- Private Daten sicher löschen – so wird’s gemacht (7/2014)
- Android zurücksetzen: So macht ihr euer Smartphone komplett platt (10/2013 - 1/2018)
- Handy-Daten sicher löschen (10/2013 - 1/2018)