Re: Thumbnails, and what creates them.

Andrews wrote on Mon, 4 Nov 2024 17:59:32 -0000 (UTC) :

It's my understanding that, on Android, just as the entire homescreen setup
is stored in a single file that you can backup & restore, all the Wi-Fi
settings on Android are also stored in a single file (AFAIK).
 /data/misc/apexdata/com.android.wifi/WifiConfigStore.xml
 
I haven't tried it, but a quick Google search shows this backup method:
 <https://www.google.com/search?q=backup+wi-fi+settings+android+using+adb>
 1. Turn on the Developer options menu on your old phone.
 2. Turn on USB debugging and Rooted debugging on that old phone.
 3. Connect that old phone to your computer & grant debug permissions.
 4. Execute adb root on the computer
 5. Execute adb pull /data/misc/apexdata/com.android.wifi/WifiConfigStore.xml
 6. Repeat steps 1 through 4 on the new phone, only use push, not pull.
 
I didn't try it though... if you do try it, let us know how it works out.

Since I'm always a very helpful person, and even though my Samsung Galaxy
A32-5G baseband version is unrootable, I ran that test above for the team.
 <https://i.postimg.cc/2jxYYsmM/adb-pull-wifi.jpg>

C:\> type hosts.txt
     The system cannot find the file specified.

C:\> adb pull /system/etc/hosts .\hosts.txt
     /system/etc/hosts: 1 file pulled, 0 skipped. 0.0 MB/s (56 bytes in 0.003s)

C:\> type hosts.txt
     127.0.0.1       localhost
     ::1             ip6-localhost

C:\> adb root
     adbd cannot run as root in production builds

C:\> adb pull /data/misc/apexdata/com.android.wifi/WifiConfigStore.xml
     adb: error: failed to stat remote object '/data/misc/apexdata/com.android.wifi/WifiConfigStore.xml': Permission denied

We're going to need another way to copy & restore that Wi-Fi xml file.