Thanks very much for your replies & suggestions & excellent assistance guys !

Seems like I haven't been around this way for 2 or 3 years.
Hi and sorry for delay in responding; had to scoot out for a bit. My wife rented one of those electric Nissan 'Leaf ~ Zero Emission' cars to try it out, and oh my gosh, they are so incredibly nice! Incredible and to me nearly unbelievable technology. Soooooo nice to drive! So quite; no engine sound; almost eery tech with a reverse/back-up camera that also shows a pic of the vehicle from what looks like a camera shooting down on the vehicle from approx 30' above !:-0 It somehow records everything whilst you're backing-up, then converts it to a view from 20~30 ft above!
Lots of questions though, like 1) How many motels have ample charging stations? 2) How do you prevent your charging cord from being stolen? 3) How long do they estimate that the battery life is going to be? 4) What will the estimated cost be to replace the batteries? 5) Is the battery the same models' as all the ones that are catching fire in garages (at night) and burning peoples homes down? 6) &c &c.
Regarding the Stylo 4; it lost service this morning after a notification popped-up saying something about the SIM no longer working or something, (we bought the Stylo 4 in 2018 for a 93 yr old parent —whos' eyesight is very poor, and only has sight in one eye— who swiped the notification away before we could see it. But the phone no longer sent or received calls; instead displaying a pop-up that said, "Emergency call only [OK]".
And
@B. Diddy you were right; and an AT&T store rep concurred that it likely just needed an updated SIM card, of which there'd be no charge for, whenever we could bring the phone in. So we walked in to our local AT&T store; they put in a new 'updated SIM' but it still didn't work. We all went, Hmmmm. :-\ But then the AT&T rep suggested that possibly the LG software needed updating, (I had updated the Android software already to no avail), and upon updating the LG software . . the Stylo 4 works again !=))
Thanks again! As I think
@B. Diddy suggested on the other thread, emailing the AC community support admins did help. ;-)