Re: Thumbnails, and what creates them.

On 2024-11-04 14:47, Andrews wrote:

>
Bob Martin wrote on 4 Nov 2024 06:06:35 GMT :

>
I used to use TWRP to do a full backup of my Nexus phones.

 A "full backup" is folly, in my humble opinion.
What you need is to "plan ahead" by being intelligent on a computer.
 You have to understand how the operating system works.
Specifically you need to understand how the GUI works.
 For Android, that GUI is your precious homescreen setup.
Right?
 All you need to back up is your homescreen (which is a single file).
That's it.
 Everything you care about is already in a single folder on external sd.

NO, NOT EVERYTHING!  See below.

To restore your phone onto a new phone, all you do is two things:
a. Swap out the sdcard (formatted to a known volume ID) to the new phone
b. Restore the single file which is your homescreen to the new phone
 I've done this many times.
No Internet involved.
 No "full backup" needed as the apps all restore themselves in a single tap.

So how does that help me with this backup problem: How to transfer all my WiFi connection settings from my old Android 7, note carefully the Android version, Samsung Galaxy Tab 2 SM-T719 to a Pixel 8a.
I tried a number of general data transfer programs to copy stuff between the two phones, but in the end got best results simply by copying everything conventionally via my PC.  However, the WiFi settings are not stored in the data accessible from a PC.
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