On 10.07.2021 18:51, Erich Eckner wrote:
>> > In general, Android backup is - to put it delicately - a
completely screwed up thing.
>>
>> > Especially if you don't have your phone rooted.
>>
>> Yes, I imagined, it would be difficult/impossible to back up a
complete phone, when it's not rooted. However, I could imagine backing
up "user data" (images, address book, emails, etc.) with some
pipe-like endpoint.
>>
> Not necessarily. Without root any access to other app's data is
severly limited (if not completely blocked). There is more access via
USB with debugging enabled and adb tool but still to back up the data
this way the app must permit it (there is a setting in app's manifest
saying whether adb backup will access this app's data or not). And
thirdly - even with root access there is a huge PITA with migrating
system apps' data (phonebook, text messages and so on) between
different phones. Been there, done that, ended up with manually
decrypting and unpacking app and converting contacts to CSV or ldif.
> Mobile phones - their backups and/or migrations have "since always"
been a completely horrible experience for me.
ok, I see. Thank you for your input!
To give you an idea of how I backup my android device:
1) For text messages (and call logs) - app called SMS Backup and restore
- it creates a dump of text messages using Android API and stores it in
a XML file if I remember correctly. You can restore the backup with the
same app on another phone - tried it, does work.
2) For contacts - there is nothing reasonable really, except built-in
synchronization with external account. As I don't want to push my
contacts to gmail or another such services, I have my own CardDAV server
running radicale
3) For app data - I have a script that does a batch dump of app data for
every installed app (as I wrote before - it doesn't work for some apps
which don't allow it - mostly games or banking apps) using adb from
android tools (it does a separate dump of each app thus needs to
simulate entering password and "clicking" on screen with adb in order to
not require you to enter the password separately for each app). I simply
attach my phone with USB cable to my laptop and run this script from
time to time.
Unfortunately, I don't see any easier reliable way. Of course you may
try to synchronize your data with gmail account but - to be honest, I'm
not sure how well it works (especially with those apps which are set as
not-backuppable) and it does raise some privacy concerns for me.
HTH
PS: Since we're drifting from the main topic of this list PM me if you
want more details about the script.
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