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distance to Bluetooth device drains battery life

F

firewood

macrumors G3
Original poster
Jul 29, 2003
8,145
1,389
Silicon Valley
The iPhone turns up its radio transmitter power if it is getting a weak signal from a 3G tower, wifi access point OR Bluetooth device.

I found that if I leave my Bluetooth headset in the car outside turned on, it just kills my iPhone 3GS's battery life overnight, whereas if I put the Bluetooth device next to my iPhone, or turn off Bluetooth on the iPhone if I've left the headset outside, the iPhone's battery life barely goes down overnight.

ymmv.
 
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