3 ms·
Could this also work on "cold" devices, so devices that have Wi-Fi but it's turned off?
by dep_b 10y ago
Could this also work on "cold" devices, so devices that have Wi-Fi but it's turned off?
- danudey 10y agoPresumably not, since the wifi chip in those cases is usually powered down entirely (hence why it can't be used for geolocation).
- duskwuff 10y agoReceiving any sort of communications over wifi would require the radio to be powered on, and sucking down battery the whole time. There's no way Apple would have missed such an obvious way to extend battery life -- I'd be surprised if it's even powered on unless the phone is actively communicating on the wireless network.