iPhones notify you at 20% then again at 10% (I think I get a 5% also but I usually never let it get that low) and you can put it on battery saver. You can’t do anything with the phone unless you acknowledge the battery pop up. So if the battery was dying when he texted he had to have known.Since they don't have him or his phone, I'm assuming the info about the text came from the friend in Missouri, who simply said that they'd received a text at 3:30 a.m. from Alex and no one reporting thought that through. So more likely 1:30 a.m., and if we accept the current scenario, from the apartment.
Wouldn't he have noticed his phone was nearly dead when he sent the text? Mine starts warning me at 15%. His girlfriend had made the comment that his phone died right after he left the apartment at 2:30.
There have been MANY comments locally--by searchers, by concerned local people--that there's a way to track both the AirPods and an iPhone with a dead battery (I've seen the link to wherever provided several times), but I haven't seen a response as to why neither has been/can be done.
Totally my opinion, but does anyone else find the "carrying a passport instead of a drivers license" to be, well, odd? I wonder if people who've known him a long time could verify that he always did that. Or if he just recently started doing that.