Bluetooth is a power vampire

[tcadbury]

My battery was doing alright till I turned on Bluetooth yesterday. I forgot to turn it off and the battery discharged from 60% to 0 in about 3 hours.

My headset was not in range, so the phone must have been trying to pair with the old profile.

Question: wasn't Bluetooth intended for low power consumption?

Also, I wish the Lumias had incorporated Bluetooth 4. They have a lower power profile and support the new devices like fitbits.

 

[philpeeps]

I keep bluetooth on 24/7 and it does not do as you say.

 

[brmiller1976]

Bluetooth consumes almost no power at all.

 

[tcadbury]

Was the device you were pairing with, within range. The device in my case is a car, and it seems like a continuous check might have been causing the battery loss.

 

[conanheath]

Open bt settings and see if it is constantly trying to find a saved device. If mine doesn't pair with something it cycles through all known devises looking for one. I think its supposed to time out but maybe yours got hung up? Just guessing but I would do a soft reset to make sure it doesn't happen again.

 

[ibuyufo]

got bluetooth on all day. When I take the phone off the charger and on standby I am still at 100% 9 hours later.

 

[ololmarc]

My battery was doing alright till I turned on Bluetooth yesterday. I forgot to turn it off and the battery discharged from 60% to 0 in about 3 hours.

My headset was not in range, so the phone must have been trying to pair with the old profile.

Question: wasn't Bluetooth intended for low power consumption?

Also, I wish the Lumias had incorporated Bluetooth 4. They have a lower power profile and support the new devices like fitbits.

the total opposite with my lumia. after work from 10 AM - 7:00 PM, I come home with bluetooth turned on for the drive to and from work playing music and talking via headset fm tuner, i finish my day at 11:00PM @ 70% battery. this is also with actual usage and background apps running.

 

[T850]

I haven't turned off my bluetooth since I bought my phone and I still get 2+ days of usage after a month.

 

[rareohs]

Also, I wish the Lumias had incorporated Bluetooth 4. They have a lower power profile and support the new devices like fitbits.

I could be wrong, but my understanding was that the Lumia 920 *does* support BT 4.0... it's *Microsoft* who has, in their infinite wisdom, decided not to support BT 4.0 from a software side. In other words, the 920 has 4.0, but WP8 won't let you use it.

 

[Twitter@Firas_MD]

I turned it OFF at the moment I bought the phone, never needed it

 

[waooga]

I had the exact same problem as the OP - whenever I have Bluetooth on the battery drains by 10% per hour or faster. It doesn't matter if my headset (the only device I have listed) is successfully connected or if it is searching for it, the battery still only lasts for 6 to 8 hours tops. When I turn off the Bluetooth battery life is significantly better - it's about 4 hours since I unplugged from the charger and I'm still at 94% after regular use, including about an hour of playing music stored on the phone (not streamed).
So now I'm beginning to wonder if I either have some kind of hardware issue with my phone or if the O/S just gets hung up and is constantly searching/running the Bluetooth even when it should not be.

 

[brmiller1976]

Which handset is having the drain problem?