I’m about to switch my outdated Samsung tablet and smartphones to LineageOS. But I want to make a backup of my device, including the OS and everything, in case something goes wrong and I need to flash the original OS back into the device.
How do I proceed? I think I need to do a Nandroid backup or something? Is that correct?


On the flip side, so many apps these days keep data local, but the master copy is all on their servers.
You want to back up SMS, photos and any downloads, documents, files or data. It pretty much needs to be manually done.