In any iPhone update, the majority of the time is taken up by the downloading and verifying of the update file. I would imagine this would be eliminated by having the update file on the pad so it would only leave the installation, thus not producing that much heat, and I certainly wouldn't expect enough heat to cause any issues in the box. The installing of an update doesn't take that long, and if they're going to do it by circumventing the downloading process, then I can see this being done at the point of sale.
They could just place the box on the pad and it wakes the iPhone and pushes the update while the customer is busy finalizing the purchase. They could potentially just need the time necessary to push the file wirelessly to the iPhone and the phone could then continue installing the update inside the box as the customer takes the box with them. In that case heat is not an issue at all as the customer will open the box soon anyway.
I don't think this will be organized in a way that stores have to go around updating inventory phones, that wouldn't make sense. Even if we put battery and heat concerns aside, the man-hours needed to individually update every iPhone in stock would be a waste. If they implement this, I expect it to be a short process, with most of the work done before the box goes on the pad and after it is taken off the pad.
They could just place the box on the pad and it wakes the iPhone and pushes the update while the customer is busy finalizing the purchase. They could potentially just need the time necessary to push the file wirelessly to the iPhone and the phone could then continue installing the update inside the box as the customer takes the box with them. In that case heat is not an issue at all as the customer will open the box soon anyway.
I don't think this will be organized in a way that stores have to go around updating inventory phones, that wouldn't make sense. Even if we put battery and heat concerns aside, the man-hours needed to individually update every iPhone in stock would be a waste. If they implement this, I expect it to be a short process, with most of the work done before the box goes on the pad and after it is taken off the pad.