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Das inoffizielle Android-SystemhandbuchDas inoffizielle Android-Systemhandbuch
Buy at Amazon for €6.52
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 €7.99
Vanja SD/Micro SD Card Reader, Micro USB OTG Adapter and USB 2.0 Memory Card Reader for SDXC, SDHC, SD, MMC, RS-MMC, Micro SDXC, Micro SD, Micro SDHC Card and UHS-I CardsVanja SD/Micro SD Card Reader, Micro USB OTG Adapter and USB 2.0 Memory Card Reader for SDXC, SDHC, SD, MMC, RS-MMC, Micro SDXC, Micro SD, Micro SDHC Card and UHS-I Cards
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Hanbaili GPS Navigation Card 8GB Card Memory Card for Car MP5/Car Radio DVD Player/GPS NavigatorHanbaili GPS Navigation Card 8GB Card Memory Card for Car MP5/Car Radio DVD Player/GPS Navigator
Buy at Amazon for €9.79
ANCwear Bluetooth Smart Watch, Smartwatch with SIM Card Slot, Camera, Music, Gaming, Sports Smart Watch, Phone with Pedometer, Sleep Monitor, Compatible Android Phones for Women Men ChildrenANCwear Bluetooth Smart Watch, Smartwatch with SIM Card Slot, Camera, Music, Gaming, Sports Smart Watch, Phone with Pedometer, Sleep Monitor, Compatible Android Phones for Women Men Children
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Rankie USB-OTG Adapter für Smartphones, Handy und Tablet, Micro USB Anschluss, 3 Stück, SchwarzRankie USB-OTG Adapter für Smartphones, Handy und Tablet, Micro USB Anschluss, 3 Stück, Schwarz
Buy at Amazon for €4.97
KiWiBiRD Micro USB Male to USB A 2.0 Female High Speed OTG Adapter USB to Micro USB Plug Compatible with Android Smartphones/Tablets with OTG Function - Pack of 2KiWiBiRD Micro USB Male to USB A 2.0 Female High Speed OTG Adapter USB to Micro USB Plug Compatible with Android Smartphones/Tablets with OTG Function - Pack of 2
Buy at Amazon for €5.69
Deleycon USB Cable Nylon and Metal Plug, blackDeleycon USB Cable Nylon and Metal Plug, black
Buy at Amazon for €6.99
Asus ZenFone AR ZS571KL Smartphone (14.5 cm (5.7 Inch) WQHD Touch Display, 128 GB Memory, Android 7.0) BlackAsus ZenFone AR ZS571KL Smartphone (14.5 cm (5.7 Inch) WQHD Touch Display, 128 GB Memory, Android 7.0) Black
Buy at Amazon for €275.71
As of 2020-09-26 14:53
prices & availability might be subject to change.
StatsPermissionsConcernsSearch apps by category and permissiondehelp

Backup & Co.

Backup your apps

2020-09-25

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

2020-09-25

Backup call logs

2020-09-26

Backup calendars

2020-09-26

Backup contacts

2020-09-26

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

2020-09-26

Backup contacts, SMS, and more

2020-09-26

Full Backups

Full Backups (root required)

2020-09-26

Full Backups without root

2020-09-26

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. A video demo of the Beta can be found at PeerTube. It’s called Seedvault, and you can find the source here.

Full Backups: Nandroid

2020-09-26

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

2020-09-26

Backup contacts into the Cloud

2020-09-26

Backup SMS, MMS, and more into the Cloud

2020-09-26

Various Cloud Backups

2020-09-26

Other Backups

Backup WiFi APNs

2020-09-26

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

2020-09-19

Various Backups

2020-09-26

Further Readings:

2020-09-26