How much does Bluetooth (idle) drain the battery? What about FoxFi? - One (M7) Q&A, Help & Troubleshooting

If I leave Bluetooth on 24/7, but don't have any devices connected, how much is the battery drain?
Also, how much drain is leaving FoxFi Bluetooth tethering enabled, but don't have any devices connected?
I'm wondering if it's worth turning Bluetooth on/off as needed versus leaving it on 24/7 (including FoxFi Bluetooth tethering)...

With BT 4.0 I'd say it is not worth switching it on and off, so assuming that BT on HTC is as good if not better as on Iphone (have BT on it 24/7) keeping it on 24/7 will not affect standby time to much
I personally keep wifi active 24/7 on HTC (which I think is more power hungry than BT) and still get close to 2 days from the battery

artiik said:
With BT 4.0 I'd say it is not worth switching it on and off, so assuming that BT on HTC is as good if not better as on Iphone (have BT on it 24/7) keeping it on 24/7 will not affect standby time to much
I personally keep wifi active 24/7 on HTC (which I think is more power hungry than BT) and still get close to 2 days from the battery
Click to expand...
Click to collapse
Wifi isn't power hungry actually, as it uses Wifi for data instead of 3G/4G which requires more power based on signal ect.
Also Wifi has alot of power saving protocols especially when in standby, more so then normal data.

Yeah, WiFi connected in a battery saver. WiFi disconnected but on doesn't drain much. BT drains a ton, but I don't know if that is fixed in BT4.0 or not.

godofwar424 said:
Wifi isn't power hungry actually, as it uses Wifi for data instead of 3G/4G which requires more power based on signal ect.
Also Wifi has alot of power saving protocols especially when in standby, more so then normal data.
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Click to collapse
I'm positive he meant he leaves Wifi on even when he's not connected to a network.

I've had BT left on for months on my samsung note 2 and now my HTC One for a week and the battery effect is minimal as i monitor via betterbatterystats.

poczynek said:
I've had BT left on for months on my samsung note 2 and now my HTC One for a week and the battery effect is minimal as i monitor via betterbatterystats.
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Click to collapse
If I leave BT on my SideKick4G my phone drains from 100 to 15 in about 3 hours. If I keep it off, my phone lasts 15+ hours. It was about the same with my T-Moible G1 before that as well. That is awesome news though, that they fixed that on newer phones.

Related

Battery Life any good

Hi,
I'm thinking of changing from the M3100 to the Kaiser.
Is the battery life any better as my phone with push email goes flat so quick.
Cheers.
What do you consider "quick"?
My TyTN II is running 24/7 with a constant 3G-connection, 5 minute interval for POP3-mail and Exchange-pushmail. I also call about 45 minutes/day and send out a few SMS.
Based on my experiences so far, my battery should last about 2 days before going to backup-battery. And I think that's decent enough for the usage I demand from this device (it also helps to have 4 chargers laying around in various places).
Getting ~ 18 hours with ActiveSync email push "As items arrive", 3G / HSDPA, around ~ 3 - 5MB data download per day, ~ 30 mins calls, light GPS usage. Not pretty but given the large featureset and speed of the device (e.g. data download) one has to make compromises. A larger battery design would have been nice but a charger at home and in the office and a spare battery when at neither one do the trick as well.
davidlucas said:
I'm thinking of changing from the M3100 to the Kaiser.
Is the battery life any better as my phone with push email goes flat so quick.
Click to expand...
Click to collapse
In my case - rather light usage - it's roughly the same as with my previous Hermes, which means ~2 days when Auto (2/3G) mode, and ~3 days when on 2G-only mode.
Not so good on mine
I am very unhappy with mine, particularly compared with my Trinity (same usage pattern, but I get probably twice less battery).
- Listening to music on the speaker for 15-20 mins drops the battery from 100% to less than 90% (after a full night charge).
- Using GPS for 60 mins drops the battery by a 20-30%. These are not scientific measurements, but I am almost reluctant to use the device because of this.
It would seem, compared to other people’s comments, that my battery or device has a problem, so it might not be a good indicator.
Compared to Trinity (wm6), screen, performance, Bluetooth (no problems with SE DS 970) is a big improvement. Weight (190g) and size is not. Trinity felt very robust, particularly due to absence of keyboard.
Compared to Hermes, everything is much better.
Is the trinity 3G? If not, it's not a fair comparison.
Thanks for those answers.
Well I'm getting about 12 hours from my 3100 so it seems the Kasier is pretty good.
Battery 95% when started - GPS for 2+ hours + a few phone calls - battery 44%. Which I actually consider ok - GPS uses a lot of juice at the best of times. For long trips I will just use my external GPS receiver.
Most of the time you use GPS when you are in a car. Get a charger for in the car.
I have one at home, work and in the car. Works just great! Its a price to pay to be continuously online on a mobile phone, a price I am willing to pay. Just need to get used to charging even if battery isnt low.
I probably will buy a 2nd accu pack later.
If there's a Kaiser cradle that will be sooooo cool.
Battery is highly sufficient for myself.
Battery not too great for my usage patterns. 3G push all day and night, beam autoreceive off, bluetooth WIFI off. Lasts about 24 hours.
Just out of curiosity, what brightness/auto-dim/auto-off settings do you guys use?
i take my phone off the charger at 7am have push mail running and have band set to gsm. im down to 60% by 4pm with light use(30 min talk+15 min internet)
heavy use(1 hr talk + 30 minutes internet im down to 40%. subtract an extra 35-40% if i listen to internet music through BT for an hour while at the gym. when i use gps in the car i have the charger hooked up so no drain. i only use 3g when listening to internet radio watchin slingbox or surfing large pages. I dont think i could use this as a work phone without constantly chargin. at work im on the phone at least 3hrs a day.
Yep, Trinity is similar to TyTn I except no keyboard, but with GPS.
jamijam said:
Is the trinity 3G? If not, it's not a fair comparison.
Click to expand...
Click to collapse
For long calls, I rather use a normal phone than a cell phone. Because at work I am using a laptop, I got used to charge it when I am using my laptop.
What helps is change the brightness settings.
Hi. I am trying to adapt free and commercial version of bandswitch and commmgrpro to work with kaiser to be able to switch between 2G and 3G with one click and a few seconds so save batterty. Because a unknown reason the system that works in Universal, Athena and Tynt doesnt work correctly with Kaiser and Soft Reset is required. I will keep you reported.
Dani
danielherrero said:
Hi. I am trying to adapt free and commercial version of bandswitch and commmgrpro to work with kaiser to be able to switch between 2G and 3G with one click and a few seconds so save batterty. Because a unknown reason the system that works in Universal, Athena and Tynt doesnt work correctly with Kaiser and Soft Reset is required. I will keep you reported.
Dani
Click to expand...
Click to collapse
it's very fast if you use phone configuration... you set to GSM or AUTO, and in a few seconds you have 3G o GPRS connection..
laapsaap said:
For long calls, I rather use a normal phone than a cell phone. Because at work I am using a laptop, I got used to charge it when I am using my laptop.
What helps is change the brightness settings.
Click to expand...
Click to collapse
The power it requires to lit the Screen, the less light the less power needed. Thus making the battery last (a bit) longer
pepeto2001 said:
it's very fast if you use phone configuration... you set to GSM or AUTO, and in a few seconds you have 3G o GPRS connection..
Click to expand...
Click to collapse
Hi pepeto.
Yep, you are right, but you ve to go to phone/menu/options/band.....And this system doesnt allow to go to 3g, for example, for 10 minutes and then automatically switch back to 2G if you forgot to do it...
Its easier to do one click in today plugin....At least in my case because I ve to switch many times per day.....
Dani

Battery problem

Hi,
I just bought my Kaiser 4 days ago.
I am using the bluetooth adn an SDHC card.
My problem is, following: the batter goes every day empty! I unplugged from the charger 4hours (I was using the phone for one our), and the batter is on 34%.
Do you have the same problem or my batter is wrong?
tnx:
Adrián
Wow, really fast battery drain.
No, I dont have that fast drain.
Do you use data connection all the time? Wi-fi? 3G?
Backlight? Power off when device is not used ...
Worth to check.
I switched off the online data connection and the 3G..
I jut pulled off the SDHC card for testing the battery...
I hope it will help..
How often do you charge the battery, and how long do you use the phone per day?
It depends ... between 1 or 2 days ... and I usually charge when it is at 30% - 50%, during evening.
And I use 3G for browsing the internet for now and then randomly also MSN/Yahoo chat.
I suggest to hard-reset, and run your phone without any app installed.
Then see the battery drain.
big source of battery drain for me was the WiFi and the push email.
I have also noticed the battery drains pretty damn fast. Much faster than my wizard it would seem. I am slowly disabling things to see if I can find the source. Otherwise I am calling HTC and getting a new battery.
Are you leaving Bluetooth on? That will drain the battery pretty quick
Pooper said:
Are you leaving Bluetooth on? That will drain the battery pretty quick
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Click to collapse
Nope - no bluetooth - no push email. Its very wierd.
sorry i was referring to the OP
I am using the Spb GPRS Monitor.... Does it need extra battery power?
Pooper said:
Are you leaving Bluetooth on? That will drain the battery pretty quick
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Click to collapse
I think that is not correct. Bluetooth hardly has any influence on the battery drain.
You can leave it on for ever.
But do a test yourselve.
1. Load the battery 100 %
2. Set bluetooth on or of and put your baby to sleep for 8 hours.
3. Check the battery situation in the morning, the first time you start using it. You should, in 8 hours, not have lost more that 4 till 5%.
That is with GPRS and no 3G or HSDPA. I did not test that, but...
You will see that a night with, or without, makes hardly any diiference.
But maybe I am wrong.
My personal experience is that using GPRS ( Phone=GSM only) is the most efficient. Especially if you have Messenger on the whole time.
Huib
Hi
When Bluetooth is on the device will not go into standby even if the screen appears dark as Bluetooth needs the OS to be alive to work, so if you have programs loaded that are using CPU cycles the battery will drain quickly as these programs will run continually.
Regards
Phil
The only thing that I am saying is that my phone, in 8 hours, with bluetooth on, uses max 4% of battery drain. With blutooth off I see no difference.
The phone is in sleeping mode, so people can call me. What else can I say?
So I cannot say that Bluetooth drains my battery faster. At least not visible to me.
I tested did a long time ago with several systems. the last one, before my Tytn II came was on blootooth its whole life. And now again I see the same at my little kaiser.
Huib
P.s. and then this.
I see as standbye the situation, that I only can switch it back on with sliding the keyboard or the power switch. If other keys do not react, is in't this standbye? The rest of the discussion I prefer to leave to better specialists on this forum
herpi said:
The rest of the discussion I prefer to leave to better specialists on this forum
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How rude!
Lol... i think he meant others than himself not the other poster.
darkilici said:
Lol... i think he meant others than himself not the other poster.
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Click to collapse
Absolutely.
Huib
For Best battery life you should make a false Push email and set it to check manualy there is info on google about how to do this. thats only if you dont use exchange. Also NO bluetooth yes it does suck lots of juice! Also make sure you dissable the IR connections that also sucks juice. there are also power saving reg tweaks in the registy that you can find in the Wiki
There is no I/R in Kaiser, and BT standby seems to draw very little. I leave mine all the time, I loose about 5% battery overnight. WiFi is a completely different story, it's a power PIG.
austinsnyc said:
For Best battery life you should make a false Push email and set it to check manualy there is info on google about how to do this. thats only if you dont use exchange. Also NO bluetooth yes it does suck lots of juice! Also make sure you dissable the IR connections that also sucks juice. there are also power saving reg tweaks in the registy that you can find in the Wiki
Click to expand...
Click to collapse
I still disagree.
When bluetooth is just ON and not connected to any device it hardly consums power. (IMHO)
Do a simple test and let it on for a night sleep with and without bluetooth.
When connected to a headset or whatever it of course consumes.
Pls tell me the difference.,
http://forum.xda-developers.com/showthread.php?t=305518&highlight=battery
Huib
I have had my TyTN II since Tuesday the 25th - so only 2 days now. I pulled the phone out of the charger at 6:50am this morning. I have WiFi turned OFF (only use at night when I am surfing while watching TV). I have BlueTooth off. I do have BB Connect installed and running with 1 BES account and 3 BIS accounts. I was on the phone for maybe 5 total minutes so far this morning - and I surfed for like 10 minutes via EDGE on the way to work. I do have SPB Mobile Shell 1.5 installed, but from what I read it doesn't effect battery life. I have the unit set to shut the screen off after 2 minutes....and my LCD brightness is at like 70% or so.
With all this - as of 10:35am this morning - I am already down to 75% battery. At this rate, the phone will be dead before 5pm....! Not even a full day.
Man - I hope this gets better because I can't run my life with phone plugged in half the day just so it will last me!

Bluetooth Drain Battery?

Hi everyone,
According to Locale, having Wifi on all the time drains very little battery unless you are actually connected to a wifi hotspot. After trying it out for a few days this is actually true.
Does anyone know weather this also applies to bluetooth? Can I leave bluetooth on 24/7 without it effecting my battery life too much? Would like to leave it on so it's there when I need it tbh.
Thanks,
Steve.
brummiesteven said:
Hi everyone,
According to Locale, having Wifi on all the time drains very little battery unless you are actually connected to a wifi hotspot. After trying it out for a few days this is actually true.
Does anyone know weather this also applies to bluetooth? Can I leave bluetooth on 24/7 without it effecting my battery life too much? Would like to leave it on so it's there when I need it tbh.
Thanks,
Steve.
Click to expand...
Click to collapse
with all of my phones (including the g1) bluetooth drains battery even when not in use. You could try the bluetooth widget, it gives easy acess and dosent take too long to turn on

battery life question

There is a lot of conflicting info about Wifi vs 3g.
Which is better to use in term of saving battery?
Does Signal strength of either affect battery life?
IF using wifi, should you have it to always on ( when in wifi zone of course) or should you have it set to sleep when screens off?
I've done testing on that and I've noticed that when using the phone in long intervals, its better to disable connections but when using the phone in frequent bursts it's better to just leave it on. But this is when you are in wifi range the entire time.
Sent from my GT-I9000 using XDA App
I typically have my wifi (and 3g) disable itself when the screen goes off. It seems to restore very quickly. I use Juice Defender (in market) to manage this, which I believe does a pretty good job improving battery life.
wbcollins said:
I typically have my wifi (and 3g) disable itself when the screen goes off. It seems to restore very quickly. I use Juice Defender (in market) to manage this, which I believe does a pretty good job improving battery life.
Click to expand...
Click to collapse
Completely agree, some people say juice defender drains your battery, but don't believe them haha
Sent from my GT-I9000 using XDA App
with the whole jD controversy. I'm assuming it has to do with how often the phone is coming out of sleep. If your using your phone every 5 or ten minuets a day then JD probably is going to use more battery then not having it vs lets say you let your phone sleep for half an hour or hours at a time...
Turning a car on and off ( im assuming) takes more gas then letting it run for a few minuets ( correct me if im wrong, but its just an analogy ;] ) but leaving your car run for a hour because your going to use it ina bit isnt effective at all.
Agreed that turning off networking when not needed (Wifi or 3g) will help battery life.
Signal strength of 3G and Wifi will impact battery life, as both protocols will adjust the power when the signal strength is high - low. Your phone will also crank up the power when the signal for basic voice service is weak to keep you connected.
I think over the course of a day at work, juice defender pays off. You can use it in lots of different ways, though the interface is a little clumsy. It also helps me, with help from juice plotter, to determine if my data connections are indeed staying off when I want them to or consuming more energy than they should. When my phone is in my pocket, I don't want it doing much.
can anyone get into more detail about the question at hand?
as in what is better then what .
2 wifi bars better then 2 3g bars?
which uses LESS power ?
IMO, i would say wifi uses less power since the signal doesn't need to travel far to get to your access point vs a 3G signal that needs to go a mile to get to the cell tower. But I'm not an electrical engineer so take it for what it's worth. I leave wifi enabled and use JuiceDefender to turn it on and off as needed. I'm more concerned about data usage since for me wifi is unlimited and 3G is not.
most ISPs limit Bandwidth to 250GB a month. so its not unlimited... so try to stay under that ;]
My experience, turn off wifi is better for bettery life. The battery level almost constant when the wifi is off. The level drop about 2-4% Per hours if wifi is on.
Sent from my cappy.
If you leave wifi on when you're not connected, it drains a lot of battery.
Sent from my SAMSUNG-SGH-I897 using Tapatalk

HD7 on Wifi - Is it really draining battery?

I know this was an issue an issue in the past for older phones. With the recent high tech phone/smartphones/battery, I am just wondering if this is still an issue today.
The reason I am asking, I experimented and let my HD7 stand still without using it with the wi-fi on then and wi-fi off for almost a day for both and appears that I have the same battery remaining. I wish I could see the percentage use but looking at the icon itself appears the same to me.
Any other thoughts?
So, a pretty nifty thing about this phone/OS, is when the screen turns off, it automatically kills the WiFi. When you turn it back on, it connects again.
This is how they're able to conserve battery life. The only downside, is if you were downloading say a big game, via WiFi, and the screen times out, WiFi dies and so does your download unfortunately. I was able to get the download to resume once, but usually not.
gasanpride said:
I know this was an issue an issue in the past for older phones. With the recent high tech phone/smartphones/battery, I am just wondering if this is still an issue today.
The reason I am asking, I experimented and let my HD7 stand still without using it with the wi-fi on then and wi-fi off for almost a day for both and appears that I have the same battery remaining. I wish I could see the percentage use but looking at the icon itself appears the same to me.
Any other thoughts?
Click to expand...
Click to collapse
i think wifi doesnt consume any battery at all when its "just connected", only when a upload or download is going on , you might find the difference...
sumedh_vsk said:
i think wifi doesnt consume any battery at all when its "just connected", only when a upload or download is going on , you might find the difference...
Click to expand...
Click to collapse
No, you are wrong. Even stay disconnect, the Wifi Module will keep searching for the new wifi spot and it kills the battery a lot. Than why i usually switch my Wifi Off (both my HD7 and my old HD2) when i am not going to use it
For the first time with a smartphone I've been leaving the Wifi on all the time, since it doesnt seem to really impact the battery that much. I'd only turn it off if I know I'm going to be a day or two out of Wifi coverage, just to save me having to grab a charger.
With my TD2, having Wifi on all the time not only shagged the battery but also slowed down the UI and made the phone hot as hell.
With Android I would have to keep my Wifi off because it would kill my battery but on my HD7 I leave my Wifi AND bluetooth on all day and I still get pretty good battery life. I only charge once at the end of the day.
the wireless radios, bluetooth & wifi, are so much more polished and refined as compared to the those in WM5/6. With WM, used to flash new radios posted on xda to acheive better reception/power consumption performance. WP7 does it right out of the box...
btw, you can set 'notify when new networks found' to off. If not needed by you, probably save some juice.
cheers
HD7 hw0002
aquanaut88 said:
the wireless radios, bluetooth & wifi, are so much more polished and refined as compared to the those in WM5/6. With WM, used to flash new radios posted on xda to acheive better reception/power consumption performance. WP7 does it right out of the box...
btw, you can set 'notify when new networks found' to off. If not needed by you, probably save some juice.
cheers
HD7 hw0002
Click to expand...
Click to collapse
I believe the only thing that changes is that it doesn't tell you when it finds new networks, but it's still always on and searching. So it shouldn't make much of a battery difference on or off.
That being said, this is the first phone where I have left Wi-Fi on at all times and I get awesome battery life. Actually, my battery period has just been great. No complaints about how long the phone lasts. Much more than any Android or Windows Mobile phones I've used in the past.

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