[amelius]

Yes. It's the equivalent of turning someone's phone into Chinese mode (assuming they don't speak it), then walking away.

[ajford]

Only if the phone automatically returns to English on a reboot. Equipment like this from that era had very little non-volatile storage, so it basically boots clean and fresh every time.

[jacquesm]

I've done that to myself. That took a bit of figuring out :)

[futharkshill]

Before/while they have an important exam where they need their phone