A courier is picking up my phone today and replacing it there and then, but I want to use my phone up until the point of the swap, so the changeover needs to be as quick as possible at the time of collection (so as not to keep the courier waiting).
I need to take out the sim and restore to factory settings, so can I take out the SIM card while the phones turned on, then start the reset on the phone itself (which'll take about a minute to do), or do I need to turn the phone off to take the sim out, then start it up again to restore?
Added (1). This is an iPhone… The battery is locked in the phone, and I'm pretty sure they're not going to throw it in a bin…