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Das inoffizielle Android-SystemhandbuchDas inoffizielle Android-Systemhandbuch
Buy at Amazon for €5.11
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 €8.69
Ugreen Micro USB 2.0 OTG Cable On The Go Adapter Male Micro USB to Female USB for Samusung S6 Edge S4 S3 Android or Windows Smart Phones Tablets with OTG Function 12cm BlackUgreen Micro USB 2.0 OTG Cable On The Go Adapter Male Micro USB to Female USB for Samusung S6 Edge S4 S3 Android or Windows Smart Phones Tablets with OTG Function 12cm Black
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UGREEN USB C OTG Cable USB C to USB 3.1 Adapter OTG Adapter Cable Compatible with MacBook Pro,​Samsung Galaxy S10,S9,S8,Note 8,A50, A40,Huawei Mate10,P20 pro,​OnePlus5T,​Sony Xperia XZ,​LG G6 etc.UGREEN USB C OTG Cable USB C to USB 3.1 Adapter OTG Adapter Cable Compatible with MacBook Pro,​Samsung Galaxy S10,S9,S8,Note 8,A50, A40,Huawei Mate10,P20 pro,​OnePlus5T,​Sony Xperia XZ,​LG G6 etc.
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POSUGEAR OTG Cable USB C OTG AdapterPOSUGEAR OTG Cable USB C OTG Adapter
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Nimaso USB C OTG Adapter 2pcs USB Type C to USB 3.0 Adapter for MacBook Pro 2018, Dell XPS 15, Galaxy S10, Huawei P30, Google Pixel 3XL and More, redNimaso USB C OTG Adapter 2pcs USB Type C to USB 3.0 Adapter for MacBook Pro 2018, Dell XPS 15, Galaxy S10, Huawei P30, Google Pixel 3XL and More, red
Buy at Amazon for €8.59
Nimaso USB C to USB 3.0 Adapter 2 Pcs USB C OTG Adapter for MacBook Pro 2018/2017/2016, Chromebook Pixelbook, LG V20/G5, Samsung Galaxy S9 S8 S8+ Note8, Google Pixel 2/2XL, Nexus 6P/5XNimaso USB C to USB 3.0 Adapter 2 Pcs USB C OTG Adapter for MacBook Pro 2018/2017/2016, Chromebook Pixelbook, LG V20/G5, Samsung Galaxy S9 S8 S8+ Note8, Google Pixel 2/2XL, Nexus 6P/5X
Buy at Amazon for €7.59
Sony Xperia Smartphone (5.0 Inch Touch Screen, 32GB Internal Memory, Android 6.0)Sony Xperia Smartphone (5.0 Inch Touch Screen, 32GB Internal Memory, Android 6.0)
Buy at Amazon for €115.00
Android 8.1 Tablet 10 Inch Dual SIM, 4GB RAM 64GB Memory Octa Core CPU, 1920 x 1200 Full HD IPS Touch, Dual Camera 3MP and 8MP, WiFi/Bluetooth/GPS TYD-107 (Black)Android 8.1 Tablet 10 Inch Dual SIM, 4GB RAM 64GB Memory Octa Core CPU, 1920 x 1200 Full HD IPS Touch, Dual Camera 3MP and 8MP, WiFi/Bluetooth/GPS TYD-107 (Black)
Buy at Amazon for €110.00
As of 2020-03-31 14:05
prices & availability might be subject to change.
StatsPermissionsConcernsSearch apps by category and permissiondehelp

Backup & Co.

Backup your apps

2020-03-28

These helpers are to backup your apps (.apk files), not their data!

Also see: AndSync with Perl via ADB => ICS+, no root required

Backup SMS/MMS

2020-03-28

Backup call logs

2020-03-28

Backup calendars

2020-03-28

Backup contacts

2020-03-28

The easiest way to export/import your contact data can be found in the Contacts app itself: it offers to export/import data using the VCard format, which is also understood perfectly by most desktop applications. From the main window, simply activate the menu, and chose Export/Import – there you are.

Backup bookmarks

2020-03-28

Backup contacts, SMS, and more

2020-03-28

Full Backups

Full Backups (root required)

2020-03-28

Full Backups without root

2020-03-28

Not all of these "complete backups" do really backup everything (if they do, I've pointed it out). An (almost) full backup without root is only possible via ADB on Android 4.0+.

Also see: Adebar, a small project of mine. Utilizes ADB and Bash to generate scripts for backup/restore, also taking care for re-disabling apps following a restore.

In the works: A FOSS pendant to the built-in Google Cloud backup, where you can shose your own resources (e.g. local card, Nextcloud) to back up to.

Full Backups: Nandroid

2020-03-28

Nandroid Backups require a rooted device with Custom Recovery.

And then there're also various PC-Tools for Backups:

Also see: Full Backup of non-rooted devices

Backups to the Cloud

Also see: Synchronizing Files and Folders.

Backup SMS into the Cloud

2020-03-28

Backup contacts into the Cloud

2020-03-28

Backup SMS, MMS, and more into the Cloud

2020-03-28

Various Cloud Backups

2020-03-28

Other Backups

Backup WiFi APNs

2020-03-28

This generally requires root. And it's a fact: root has permission to access everything…

For more apps, also see WiFi Password Recovery

Photo Backup

2020-03-13

Various Backups

2020-03-29

Further Readings:

2020-03-31