Re: Where are MMS-messages stored in Android 15 ?

Arno Welzel <usenet@arnowelzel.de> wrote:

Frank Slootweg, 2024-12-17 19:16:
 

Arno Welzel <usenet@arnowelzel.de> wrote:

Frank Slootweg, 2024-12-16 15:49:
>
[...]

  As to "not all apps allow to backup their data.": With the USB
connection, one can backup all app-private folders and files, so one
*can* backup the data of all apps. Unless there's some other kind of
restriction you're not divulging.

>
At least many Banking apps usually do not allow to backup their data.
And it does not matter, if the backup is done via ADB or as part of the
Google app backup.

 
  And *how* can those banking apps "not allow to backup their data"!?
Especially for the ADB case.

 
Their app manifest forbids it. This can be achieved like this:
 
<?xml version='1.0' encoding='utf-8'?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  tools:replace="allowBackup"
  android:allowBackup="false" />
 
The entry tools:replace="allowBackup" makes sure, that any libaries used
by the app which have their own manifest, do not allow backup accidentally.
 
And ADB will obey that and won't pull lany backups for those apps.

  Thanks for your information. It might come in handy if I ever
encounter any such apps.

  FWIW, I'm not worried about my banking apps not being allowed/able to
backup their data, because any relevant data can most likely be
recovered from my accounts on the banks servers. I.e. if lost, the
on-device data is recoverable.

  N.B. It would be interesting to know if other computer programs - such
as Samsung's 'Smart Switch' - also honor the manifest settings, but
given my above mentioned low interest, I don't think I will try.