Time for another support question, sorry to bother, thank you so much if you have helpful suggestions ^^
To keep it short, I have a cellphone SIM card, that was inside an old nokia, non-smartphone (and now dead), that was migrated inside a recent android 7 smartphone.
Something was “lost” in the process: the SMS text messages that were exchanged during the lifetime of the old Nokia cellphone, they didn’t appear in the android smartphone’s text apps (neither Android Messages by Google, nor Messenger by Facebook, QKSMS or Signal). And yet, exchanging SMS messages worked, and the new messages were stored and shown. It’s only the pre-android SMS messages that disappeared.
My conclusion was: “RIP LOL the texts must have been stored inside the phone and not inside the SIM card”.
However, as I was using another program (Apowersoft Smartphone Manager) to synchronize data between the smartphone and a PC (and quickly update the smartphone’s list of Contacts, much faster with a real keyboard and a mouse), I saw there was also the option to explore the SMS messages…
And, in there, I saw the old SMS messages! The texts still exist! – Even if they’re not visible otherwise!
Which leads me to asking: would you have an idea on how to “restore” them into prim and proper state, so that they can be seen normally like the post-smartphone-SIM-insertion of the SIM card?