It's key IMO.
His phone was, as I recall, in airplane mode.
Roughly a half hour, roughly 14 miles. It was important, whatever it was.
Local dumpsters? Suzanne's phone pinged and disappeared during that time.
Busy B was very busy.
JMO
Good morning, all. Hope it shall be, in any event...
I'm not wireless savy, so it's indulgence time again
...
{+ every bit below to be imvho.}
If Barry kept Suzanne's phone on his person for whatever period, could it not be so that he'd "see" which callers might be trying to reach her? Could he learn this even if he'd been 'locked-out'?
Recall some here have hypo-ed that Suzanne may have locked him out of her phone right after "I'm done!".
And discovering this multiplied his rage,
and he killed her.
There and then.
But her death
- as had observed Lady Macbeth's husband - had come too early.
* As a result, unplanned/
unanticipated matters began to cascade; now he would have been forced to reassess long-considered intricate details on-the-fly. As well, before implementing a change, he'd have to square it with his existing script. Lest he - so to speak - be hoist with his own petard'.
* ...which he was anyway due to his 'mare's nest' of fables. I'm thinking such a post-adrenalin surge, eleventh-hour re-map would be most ambitious, even for
an cunning person.
Thus, on-the-fly he takes her phone ...and its charger as he's unsure how long he'll need to keep it usable. And being clever and knowledgeable wrt the most minute details, habits and thought-processes of his 'ex'-wife, he'll probably be able to trial
& error his way past her feeble impasse in rather short order. In which case, could this not prove 'helpful' - he thinks - to show Suzanne is still alive and active?
This is wrong, enraged-one, because Suzanne was now going to be AWOL from that major matrimonial thingee in which she had been immersed for weeks
& months.
"Poo! Then, out the window you go! Charger,next...a few miles on, anyway."
___________________________
* Macbeth's Soliloquy: "She should have died hereafter... (5.5.17-28).
* Prince Hamlet: Hamlet, Act 3, Scene 4