No I don't, I just brought that up because OP was confused why the pilot can use their device while "normal" passengers can't.
On day four, I received a push message (from Find My) that the iPad had come to life. An airport staffer had found it and charged it up. Presumably it cold boots with airplane mode switched off, so it connected to the cellular network, received the "lost device" command, displayed my contact info, etc. I received a call shortly thereafter.
When I picked up the iPad at baggage services, I chatted with the staff a bit. They let me in on the "secret" that most airline employees never switch their devices into airplane mode anymore, and for this exact reason.