I use my iPhone 3G with my Land Rover's integrated bluetooth phone system and I'm curious how connections are established. For instance, after the phone has been paired for the first time, who initiates the handshake for the connection the next time you get in: the phone or the car? And when you leave the vicinity of the car, does the iPhone constantly hunt for the car's bluetooth system until it finds it again, or is the car supposed to initiate a kill on the connection when the system is turned off?
I'm asking because my iPhone battery is acceptable most days under normal use. It lasts all day and at night before bed, I'm down to about 40% battery. BUT, some days - under the same usage scenarios - the battery will drop all the way to 20% by lunch time. After a couple of days of testing the phone with variations of services turned on and off, I think i've narrowed the battery drain down to bluetooth. Specifically, my Land Rover and how it handles the connection.
I've noticed that the system will continue to work for several minutes after the car is turned off. So I'm wondering: if I leave the vicinity of my car before the car's bluetooth system has fully shut down - therefore properly killing the connection, if there is such a thing - would that potentially cause my iPhone to go into bluetooth overdrive trying to reconnect to a system that's nowhere nearby, effectively killing the battery?
Anyway, I've got a few questions into a Land Rover tech to see what's happening on the car side of things, but I'm curious as to how the iPhone handles bluetooth connections. Anybody have any info?
Thanks!!
I'm asking because my iPhone battery is acceptable most days under normal use. It lasts all day and at night before bed, I'm down to about 40% battery. BUT, some days - under the same usage scenarios - the battery will drop all the way to 20% by lunch time. After a couple of days of testing the phone with variations of services turned on and off, I think i've narrowed the battery drain down to bluetooth. Specifically, my Land Rover and how it handles the connection.
I've noticed that the system will continue to work for several minutes after the car is turned off. So I'm wondering: if I leave the vicinity of my car before the car's bluetooth system has fully shut down - therefore properly killing the connection, if there is such a thing - would that potentially cause my iPhone to go into bluetooth overdrive trying to reconnect to a system that's nowhere nearby, effectively killing the battery?
Anyway, I've got a few questions into a Land Rover tech to see what's happening on the car side of things, but I'm curious as to how the iPhone handles bluetooth connections. Anybody have any info?
Thanks!!