Everyone always says that using bluetooth etc can be a major drain on your battery power. I want to know EXACTLY how much of a drain on battery power using bluetooth is. If the iPhone were to be subjected to constant bluetooth data exchange for, lets say, 1 hour, how much of an affect would this have on power. any response is helpful! But I'm really looking for hard facts and figures if anyone has any! Thanks.
iPhone 4S, iOS 5
I've personally never had issues with Bluetooth draining my battery an excessive amount. I leave it on all the time and use A2DP streaming for several hours throughout the day. Despite this I still get a full days usage out of my device.
That being said, on the weekends when I'm not using the Bluetooth streaming, I could probably get two days of usage out of a single charge, or pretty close to it.
For me, this seems "normal" compared with previous devices I've owned and my usage patterns.
want to know EXACTLY......I'm really looking for hard facts and figures if anyone has any!
Apple doesn't publish the data you want, so no one here can provide it.
That's helpful for me also, but I have an additional question on this topic.
If I leave Bluetooth turned on but am not actively using the connection, will it deplete my iPhone battery because it is constantly 'looking' for a Bluetooth connection?
In other words, I don't really like turning it off and on, off and on, etc. can I just leave it on without worrying that it will suck my phone battery dry?
I realize this is an older post but I thought I'd weigh in.
My iphone 4s has been having serious battery drain issues. I've been keeping a spreadsheet for many weeks as I experimented with it and tracked the usage. This was after one genius bar appointment where they told me that I needed a firmware update that only they could do and that my battery tested normal. Even after their update, and setting the phone up as new, I saw no change.
And I've done all the stuff recommended for saving battery life and saw no major improvement.
I was having a drain of about 13% per hour just doing hardly anything. Occassional email, some locally played music off/on, very little else. I cut off bluetooth and I'm finding my phone now drains at 3% to 4% per hour. I turned bluetooth back on, and it drains 10% per hour.
I know people say the BT quits looking for a signal when you back out of it, like a fridge light going out when you shut the door. That has not been my experience. I'm not connected to anything on bluetooth and I am finding it draining at a rapid pace. Turn bluetooth off, no problems.
Battery drain due to Bluetooth usage.
