Das inoffizielle Android-Systemhandbuch
Sandisk Ultra Android 64GB MicroSDXC Memory Card Up to 80 MB/s – Class 10
SanDisk SDSQUNC-064G-GN6MA Ultra 64GB Android microSDXC Memory Card + SD Adapter up to 80 MB/s Class 10 (Refurbished)
SanDisk Ultra 64GB Android microSDXC Speicherkarte bis zu 80 MB/Sek, Class 10 (Generalüberholt)
SanDisk Ultra Android microSDHC 16 GB up to 80 MB/s, Class 10 Memory Card with SD Adapter 64GB
Tvird Card Reader SD/Micro SD Card Reader 4 in 1 Memory Card Reader Camera Card Reader with Lightning Connector USB 2.0 Card Reader Adapter for iPhone/iPad/Android/PC Laptop
SD Card Reader, Micro SD/TF Compact Flash Card Reader with 3 in 1 USB Type C/Micro USB Connector Adapter and OTG Function, Portable Memory Card Reader for & PC & Laptop & Smartphones & Tablets
Sandisk Ultra Android MicroSDHC 32 GB Memory Card + SD Adaptor up to 80 MB/s Class 10 Memory Card
SanDisk Extreme microSDHC 3 Rescue Pro Deluxe Memory Card, Red/Gold 128gb
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 (4.8@3,511) Ǥ 8
demo limited to 10MB/day; unlock key required (cost unknown) - Secure Erase with iShredder 6 (4.6@5,967) Ǥ 13 3
/ iShredder™ 6 PRO Data Shredder (3.5@210; ~EUR 5.50) Ǥ 12 2 / iShredder™ 6 Enterprise Eraser (4.1@103; ~EUR 9.50) Ǥ 12 Intro 12/2013; Vorstellung 1/2014; free version sanitizes free space only - Phone Factory Reset (4.3@1,135) 2 1 LastUpdate: 2018-08-26
- Data Sanitizer (4.3@31) 4 1 free space only
- Shreddit - Data Eraser (4.2@4,072) 8 1 LastUpdate: 2019-04-19
- Secure delete (4@3,885) 5 1 / Secure delete Pro (4.4@203; ~EUR 2.25) Ǥ 6 1 files + folders
- Secure Bulldozer (Wipe Remove) (3.9@187) 4 LastUpdate: 2014-09-05
- Fastwipe (3.9@85) 1 LastUpdate: 2014-03-18 sanitizes free space only
- Andro Shredder (3.8@1,719) 5 2 LastUpdate: 2018-03-20 files + free space
- Secure Eraser (3.8@1,173) Ǥ 7 5 sanitizes free space only
- SHREDDER : Permanent Delete - Safe & Secure Erase (3.8@668) Ǥ 10 5
- Secure Wipe (3.6@2,408) 2 LastUpdate: 2014-06-13 sanitizes free space only
- FShred - Wipe Free Space (3.6@157) 2 LastUpdate: 2017-03-26 sanitizes free space
- 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@1,186) Ǥ 8 4
- SDelete - File Shredder (3.5@789) 4 1 LastUpdate: 2017-09-15 / SDelete Pro - File Shredder (3.5@11; ~EUR 2.00) 2 LastUpdate: 2017-09-17
- Safe Delete (3.5@247) 5 3 LastUpdate: 2018-04-02 safely deletes files (not wiping free space)
- Safe Delete (3.5@148) Ǥ 16 3 LastUpdate: 2017-09-20 safely deletes files (not wiping free space)
- Super Erase (3.3@524) Ǥ 5 3 files + folders; free space requires in-app payment (go pro)
- Complete Wipe (3.3@113) 2 LastUpdate: 2016-06-21
- Secure File Deletion (3.2@72) 4 LastUpdate: 2013-04-29
- Remo File Eraser (3.1@219) 2 LastUpdate: 2015-09-13
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@139) 0
Github; trigger panic actions in supporting apps
De-Deletion (Recovering)
- DigDeep Image Recovery (4.2@331,798) Ǥ 14 7
- Recover My Files (4.2@8,977) 10 3 LastUpdate: 2018-06-21
- Dumpster Bin File Recovery. Restore Deleted Videos (4.1@352,130) Ǥ 24 17 Vorstellung 7/2014; Intro 7/2014; a recycle bin
- Restore Deleted Photos & Image (4.1@5,350) 4 1 LastUpdate: 2017-05-12
- Recover Deleted All Files, Photos, Videos &Contact (4.1@755) 11 3
- Deleted Photo Recovery Workshop (4@68,584) Ǥ 8
- GT Recovery - Undelete,Restore (4@39,218) Ǥ 17 LastUpdate: 2019-02-08
- Recover Deleted Pictures (4@4,337) 5 3 LastUpdate: 2017-12-30
- File Recovery - Photo & Video (3.9@13,837) Ǥ 5 1 LastUpdate: 2016-05-19
- RECYCLING BIN (3.9@178) 8 LastUpdate: 2017-08-11
- Data Recovery : Recover Deleted Photos (3.9@170) 10 3 LastUpdate: 2018-01-08
- DiskDigger photo recovery (3.8@375,802) 5 / DiskDigger Pro file recovery (3@3,240; ~EUR 3.25) 5 Intro 7/2019
- Recycle Bin (3.7@17,471) Ǥ 9 3
- Undeleter Recover Files & Data (3.5@39,031) Ǥ 20 25
- GT SMS Recovery (3.3@2,471) Ǥ 10 LastUpdate: 2016-06-30
- dr.fone - Recovery & Transfer wirelessly & Backup (2.7@31,414) Ǥ 6 4
Further Readings:
- 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)