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@DanH: 1. Sure, it depends on hardware, but I'm not aware of any phone that will not consume power from USB even if the battery is charged. 2. Bluetooth and WiFi often shares the same clocks, but are totally isolated on a silicon. Try to find a datasheet for one of the popular mobile combos, and you will find out that both BT and WLAN have separate reset lines, and interfaces as well - BT works via UART, while WLAN in most cases works on SDIO. So, I disagree with you.
– Andrejs Cainikovs
Commented Apr 22, 2012 at 13:22

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