Develop Bugs

HD2 WP7 battery

ok so I used my phone for about 3 hours last night tweaking things and playing with stuff and didn't charge it overnight and used it a bunch today and the battery indicator looked like it was at about 70%. probably not accurate, but the fact that it's even still on amazes me because it's probably got 8 hours of playing with it and 6 hours of standby and still going strong.
I think a full drain then a full charge might reset the battery indicator for accuracy, I wish we had like a "current widget" for WP7 to see the ma drain.
how you guys doing on HD2 WP7 battery drain? Mine seems to be even better than WM6.5

I have the exact opposite experience as you. My HD2[7]'s battery life is crap. It was fully charged last night and I had left it in my drawer with the Wi-fi off. After coming from work a half hour ago, I saw that the battery was almost drained.
Also, shouldn't the battery icon show the plug when the phone is being charged? My phone is on and booted into WP7, the red light is showing but the battery icon shows no animation or the plug. EDIT: WTF IT FROZE ON ME, I had to remove the battery!
Finally, what's with the random reboots? I've seen 2 already.

sclip said:
Finally, what's with the random reboots? I've seen 2 already.
Click to expand...
Click to collapse
I think its something related to the SD cards you are using.
If the Sd card you are using is not compatible with WP7 then you will get random reboots.
And the main thing here is that there is no specific way to know which SD card will work and which wont work with WP7

By the way my battery is somewhat draining faster than the Android I was using on my HD2

05081983 said:
I think its something related to the SD cards you are using.
If the Sd card you are using is not compatible with WP7 then you will get random reboots.
And the main thing here is that there is no specific way to know which SD card will work and which wont work with WP7
Click to expand...
Click to collapse
we know which sd cards work on official wp7 devices.

nrfitchett4 said:
we know which sd cards work on official wp7 devices.
Click to expand...
Click to collapse
What I meant to say was, we don't know which SD card will work with WP7 on HD2.
I wasn't talking about the official WP7

Well the stock 16gig TMOUS card works just fine.

my battery seems to be fine, i use my scale based on my school schedual. with android from 7 am to 4 pm around 50 to 40 percent.
today running wp7 i unplugged it around 8is and about 6 is it had very little black on the battery icon. im going ot charge it up fully, then kill it, to see if that helps reset the battery stats

Well when i first flashed WP7 my battery was over lasting.. After i manually rebooted because i just felt like doing so, my battery has started to drain a little bit to fast.
Are there any marketplace apps that can monitor this stuff yet?

Update: Last night, after making sure that my phone was fully charged, I turned off the wifi and removed the SIM card and didn't touch the phone again until a half hour ago (about 12 hours standby time in total). The indicator is showing about 50% battery life remaining. This SUCKS, and any helpful comments about this will be appreciated.

just considering its not supposed to be on the phone...
also what theme are you using
and since microsd polling it may have a lot of impact on standard battery life...
plus, let's be real, it is an htc...they're not battery efficient

domineus said:
just considering its not supposed to be on the phone...
also what theme are you using
and since microsd polling it may have a lot of impact on standard battery life...
plus, let's be real, it is an htc...they're not battery efficient
Click to expand...
Click to collapse
Here are my settings: Dark background theme, purple (hate the color normally, but somehow manages to look nice on the HD2), 30 seconds lockscreen timeout, Wifi off, Location off.
I tried removing the MicroSD, but the phone then becomes unusable with frequent freezes and reboots. I'd love to check if the card is affecting battery life if the damn phone would let me to.

sclip said:
I have the exact opposite experience as you. My HD2[7]'s battery life is crap. It was fully charged last night and I had left it in my drawer with the Wi-fi off. After coming from work a half hour ago, I saw that the battery was almost drained.
Also, shouldn't the battery icon show the plug when the phone is being charged? My phone is on and booted into WP7, the red light is showing but the battery icon shows no animation or the plug. EDIT: WTF IT FROZE ON ME, I had to remove the battery!
Finally, what's with the random reboots? I've seen 2 already.
Click to expand...
Click to collapse
HTC puts bad batteries in their 4.3" phones. They've been using 1230 mAh batteries forever (over a year). Blackberry curves come with 1150 mAh batteries so you can see what that size is somewhat optimized for: feature phones and smartphones with small non-touch screens.
Most smartphones with a 4"+ screen running Android or WP7 have 1400+ mAh batteries (the i4 and Droid X also have 1400, Galaxy S and Incredible have 1500). That's why the battery life is bad.
And it's also the reason why I've never really given the phone much consideration - the battery and the TFT LCD screen they used on it.
That being said, the battery life depends on you usage. When I used my HD2 as myprimary device the battery life was terrible. Once I got my Vibrant and used it only as a PMP, the battery life was terrific because it didn't have a SIM Card and I only used it on WiFi and to play Music and Videos.
But people who use Curve 3Gs as their primary devices and are constantly BBMing and/or SMSing people in addition to calls report days-worth of uptime (emphasis on the plural).

My battery life is on par with what it was on android (about 12-16 hours with moderate usage of web, email, facebook, and heavy twitter) and its configured the same was as my android:
1) wifi is on when I need it (maybe 20-45 minutes a day for some marketplace downloads or something)
2) location is always on
3) screen is set to manual, low and 3 minute time-out
4) I have 3 IMAP email accounts that check between every 15 minutes and every 30 minutes.
5) I have a VERY active twitter account that updates every few minutes (not sure exactly as it doesn't appear to be live tile integrated)
6) facebook and google sync
7) HTC HUB is usually running updating the weather and stocks as often as it likes
8) dark brown theme
9) ringer off and no haptic feedback
Hope that helps anyone.
I do agree that the HTC supplied battery is sub-standard. Does anyone know where I can see what the battery percentage is acutally at? I only have the icon in the top right.

Just as a bit of information, my HD7 gets significantly better battery life than my sister's Galaxy phone. Also, those of you removing the SIM, make sure you also enable airplane mode, incase the phone continues to still search for signal... Battery size isn't as important as power management, though I do agree I wish we had a bigger battery on our HD7s... we might have sacrificed a little space for it though...

I think the battery meter is off. After about an hour of playing with Netflix, Zune and watching videos with the ign app my battery meter indicated that I had a lil juice left. I went to sleep without charging the phone. I was sure it would be dead when I woke but it wasn't. I was able to get about 2 more hrs out of it while using the Zune player streaming a playlist I saw.
Sent from my HD2 Windows Phone 7 using Board Express.

There is no third party multi-tasking in WP7 and Android Users usually have more apps/services updating stuff in the background. Yes, WP7 will get better battery life than lots of Android Phones and even theHD2 with the same battery in it due to that simple fact along, nevermind all the other exceptions and the obvious disclaimer: different use patterns are different.

N8ter said:
There is no third party multi-tasking in WP7 and Android Users usually have more apps/services updating stuff in the background. Yes, WP7 will get better battery life than lots of Android Phones and even theHD2 with the same battery in it due to that simple fact along, nevermind all the other exceptions and the obvious disclaimer: different use patterns are different.
Click to expand...
Click to collapse
I have ATK or whatever it is installed on her phone, not sure if the AMOLED screen uses more juice though

Don't get me started on task killers and android. ATK may be causing the poor battery life. Those process and apps you think your killing are just gonna restart and cause more battery drain. Android does not need task killers. I suggest trying auto killer wich tweaks androids internal memory management to be more or less aggrsive. Phone must be rooted though.
Sent from my HTC Glacier using XDA App

MvP77 said:
Don't get me started on task killers and android. ATK may be causing the poor battery life. Those process and apps you think your killing are just gonna restart and cause more battery drain. Android does not need task killers. I suggest trying auto killer wich tweaks androids internal memory management to be more or less aggrsive. Phone must be rooted though.
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
I won't have much luck with that lol, her phone, her rules... I might convince her some day though

[Q] Terrible Battery Drain

Any help is appreciated...I'm at my wits end with this phone. I've been unable to make it through a day of work since I've had it.
I charged the phone from 1130 to 7 am, at that point i shut it down and did the hour charge, at 8am when I got out of bed I turned it on, let it run 2 minutes, charged it for another hour +. When I took my phone off the charger to head out the door it was 9:14AM. Its now 11:10 AM and it already shows 79% battery. I've barely used the phone. (trying the HTC tricks or just letting it hang normal both seem to make no difference really).
Spare parts reports 9m51s used without sleeping, and 9.4% used, 6.6% screen on, 0.6% phone.
Wifi, bluetooth, 3g, and sync all off since leaving the house. I've done nothing but send a few texts and listen to a voice mail.
I dont get the best reception at my current seating area, but I am able to make some calls / get service despite. Could this still be the cause? If so - is there ANYTHING I can do to alleviate that?
I have CM7 02262011 nightly, build GRH78C - on zendroid CFS. I thought zendroid would help with battery life immensely (as many reported) but I've seen almost no improvement. At this point, I'm not even making use of the smart phone features - no wifi, no playing games, no browsing the web...as soon as I fire up a game the battery plummets. EDIT to add I've had this kernel and rom for about 4 days now, and I did clear battery stats after flash. All I've read would indicate this should be enough time for it to "settle out". Is that true? END EDIT.
At this point the phone is virtually pointless to me....is the battery life that bad? I see users talking about 18-20 hours with light usage - I generally put myself in that light usage category and I cant imagine making that mark. Any suggestions?

If your "time without signal" in battery usage is really high, that'll eat your battery super fast. Really, having a low signal constantly will do the same thing. Because where I live & work never gives me more than a bar or -90 dbm, my battery goes pretty quickly too, even without a high "time without signal".
I keep 3g, Bluetooth, and GPS off almost all the time & keep wifi connected at home. I recently switched to 2.37.6.2-SavagedZen-0.1.2-CFS-HAVS-WiMAX-Froyo+. I unplugged the phone 8 hours ago (I don't like to keep in charging overnight) and it was at 98%. When I got up an hour ago, it was still at 98%. My time without signal was 73%. I've used it heavily for the past hour & it's at 95% now.
My battery life isn't great by any means, but it's better than it was. I also use CPU Boost (a free app similar to Set CPU but with less options) to undervolt. I slightly undervolt to around 700 MHz while using it lightly & set it down to about 460 with a screen off profile. Since I rarely do anything that needs the full ghz processor, this doesn't affect my phone's performance & really saves battery.
Hope this helps
Sent from my badass HTC Supersonic (Evo 4g) using XDA Premium App

It sounds like poor signal is hurting you.. your phone may be constantly searching for better signal and killing your battery. Just be sure you have no wakelocks...
Also, when you wipe battery stats.. make sure you re-calibrate your battery as well. When I wiped stats it actually did more damage than good until I re-calibrated the correct way.

Thanks...I'll try under clocking a bit and see if it has a gain...I had that disabled up to now.
I put on ZenDroid-1.1.0-cfs-avs... (about phone shows it as 2.6.35.10ZenDroid) with anywhere from -96dBm to -104dBm. Could that be the explanation?
I'll have to monitor a bit more closely at home to get a better idea of service and battery consumption.
Thanks for you input and help though.
Anyone else able to comment on their signal strength and relative battery peformance?

Rippley05 said:
It sounds like poor signal is hurting you.. your phone may be constantly searching for better signal and killing your battery. Just be sure you have no wakelocks...
Also, when you wipe battery stats.. make sure you re-calibrate your battery as well. When I wiped stats it actually did more damage than good until I re-calibrated the correct way.
Click to expand...
Click to collapse
Could you elaborate on wakelocks? I havent heard of this before... (ill do some searching as well).
Again, could you possibly comment on re-calibrating? I was under the assumption that was letting it charge fully and drain fully after a wipe of stats. I wiped stats on a full charge, let it run down, and then charged back to the phone reporting 100%. Was that incorrect procedure??
Thanks for your input!

Have you let the battery drain and than recharge several times? Part of letting the phone "normalize" for a few days is letting the phone go through several charge and drain cycles. If you get "scared" when it hits 60% battery and plug it in, your not allowing the phone to properly calibrate your battery percentage.
Also, go into spare parts and your battery history and find out what is under "partial wake usage". That will let you know what is being used when your screen is off.
For comparison sake I'm on CM7 RC2 (same results w/ RC1 though) and savaged zen 0.1.0 CFS SBC. I have one push email account, sync always on, wireless data on when no wifi, no bluetooth, and no gps. My screen brightness is always at 25%, which is plenty bright. I also have several apps running in the background like weather update once an hour, kakao talk, gtalk, etc. With Wifi on at work (NOTE: wifi saves TONS of battery over using 3g), I unplug at 7am and at 11am I'm right around 90%. A few texts/gtalk and about 30 minutes of web browsing since unplugging. I generally leave work at 5pm with around 70% battery left. However, after I leave and start using the phone more battery does drop pretty quick. I can usually make it to 11pm, but I use the remaining 70% in those 6 hours as opposed to my "work battery" which is only 30% in about 10 hours. When you start using the phone you are going to get fast battery drop. The large screen and fast processor are the culprits of that.
Always keep in mind. You have a mini computer in your pocket. You are not going to get days of battery life like you would with a crappy flip phone. Laptops with gigantic batteries last 4-6 hours, and your phone is doing similar work on a much smaller battery. It's amazing these things can get 20-24 hours of use.

Well after poking around in spare parts at the prompting of you all, I found that my phone was without signal for something like 81% of the day. I put on airplane mode and put wifi on and i was seeing normal drain. Oddly enough, it seems my HTC Hero was able to stay connected to the network better in the same "office location" - as I didnt see that kind of drop.
Regardless, its no big to kick on airplane mode for most of the day and fire up normal service on short breaks or whatever else. So issue resolved all in all. I appreciate the assistance prompting me to look into the spare parts and its various features.
Again, with airplane mode on my numbers are MUCH more inline with that of other users. Thanks to you all!

thisperishedmin said:
Well after poking around in spare parts at the prompting of you all, I found that my phone was without signal for something like 81% of the day. I put on airplane mode and put wifi on and i was seeing normal drain. Oddly enough, it seems my HTC Hero was able to stay connected to the network better in the same "office location" - as I didnt see that kind of drop.
Regardless, its no big to kick on airplane mode for most of the day and fire up normal service on short breaks or whatever else. So issue resolved all in all. I appreciate the assistance prompting me to look into the spare parts and its various features.
Again, with airplane mode on my numbers are MUCH more inline with that of other users. Thanks to you all!
Click to expand...
Click to collapse
Yea, just gotta watch out for bad signal areas, as those are the biggest battery eaters. Some phones [of the same model even] handle areas differently than others. So if, like in your case in a bad area for extended periods of time, kick on airplane mode. Also like also said, turning off your 3G when not in use is also a big battery saver.

Rippley05 said:
It sounds like poor signal is hurting you.. your phone may be constantly searching for better signal and killing your battery. Just be sure you have no wakelocks...
Also, when you wipe battery stats.. make sure you re-calibrate your battery as well. When I wiped stats it actually did more damage than good until I re-calibrated the correct way.
Click to expand...
Click to collapse
Ditto! I wiped stats without knowing what they did, found that it got WORSE. Then I looked up how to actually calibrate. My battery life rules now

I also found that calibrating your battery helps. I realized that if I unplug and then plug my phone back in almost immediately that it has to charge a little more to get back to 100%. If you do a search for calibrating EVO battery you'll find detailed instructions.

[Mango] battery drain

follow this steps for some reason if u experience battery drain in mango
1.- Turn off the phone and pulled out the sim card.
2.- Turn on the phone without the sim card. (Why?, eerr...i don't know!)
3.- Turn off the phone again and reinstalled the sim card.
4.- Finally, turn on the phone.
Please let us know if it worked for you

I've just done it.
I'm a bit skeptical if this method actually improves anything...
Let's see tomorrow how it goes...
I'll post the result here.

The best way to resolve battery drain issues is by resetting Mango after its flashed. I did that with mine and the battery stopped pouring out like a rain drain to just sipping a fine wine.

MartyLK said:
The best way to resolve battery drain issues is by resetting Mango after its flashed. I did that with mine and the battery stopped pouring out like a rain drain to just sipping a fine wine.
Click to expand...
Click to collapse
yes resetting works...but the prob is sometimes the drain comes back...
apparently it has to do with push email and connections..
especially yahoo mail.....maybe the telco is not playing friendly with this one

MartyLK said:
The best way to resolve battery drain issues is by resetting Mango after its flashed. I did that with mine and the battery stopped pouring out like a rain drain to just sipping a fine wine.
Click to expand...
Click to collapse
confirm, it works.
Data connection is the problem of battery drain if we've got data connection off, wifi off, location and bluetooth off battery drain is minimal, I can say 1-2% per 5/6 hours in sleep (during night) with data connection (during sllep) about 5-10% in the same time

MartyLK said:
The best way to resolve battery drain issues is by resetting Mango after its flashed. I did that with mine and the battery stopped pouring out like a rain drain to just sipping a fine wine.
Click to expand...
Click to collapse
I did that anyways cause everything was amuck after the update. My HD7 gets like 4 hours battery life while browsing on a full 3G connection. And that's not a 4 hours of having the screen on/using it, either... Already tried a different battery, no change.
Yes, the data connection drains a colossal ton of battery, not helped by this phone's small battery size.
They need to add quick toggles for GPS, Bluetooth and stuff like that. 3rd party apps clutter up my app menu so I don't install those. Just need a quick toggle somewhere, or add the command to the voice recognition system ("GPS Off/On", "Bluetooth Off/On", etc.).
It's much easier for me to manage battery on the Vibrant because Turning off Superfluous features like WiFi, GPS, and Blue Tooth are only a swipe and a tap away. Not so much on WP7. I never turn off my data connection, so I'm confused why Microsoft added a Data Connections app, but nothing for GPS, WiFi, or BT. Just need to add in some toggles somewhere... that are easily accessible.

I don't understand how you get 4 hours when I play music/podcasts all day at work, text all day, use apps, and go online & my HD7 makes it through at least my 9 hour work day
Sent from my HD7 using Board Express

apparently sim issues in the OS cause battery drain problems
THis is a problem found , even in IOS and android
Wp7 should be no exception

I own a Focus and I started a thread exactly because I found a similar issue. However, the "drain" wasn't present in 7660 (Mango beta).
Indeed, data connections have a 10-20% negative impact on battery life compared to beta (at least on my Focus), but the heaviest drain I got from apps that run in the background. Once I disabled those, the boost is more than noticeable.
I will also try what OP described. Btw, how/where did you get to that?

EnderPsp said:
I own a Focus and I started a thread exactly because I found a similar issue. However, the "drain" wasn't present in 7660 (Mango beta).
Indeed, data connections have a 10-20% negative impact on battery life compared to beta (at least on my Focus), but the heaviest drain I got from apps that run in the background. Once I disabled those, the boost is more than noticeable.
I will also try what OP described. Btw, how/where did you get to that?
Click to expand...
Click to collapse
well i did it works, i am not sure how but such a procedure , may reset something in the phone
maybe some issues with signal.

Well for me it did nothing...
@EnderPsp:
Last week I disable the apps that are running in the background and I noticed a small boost in battery perfomence.

HRQ.SLV said:
Well for me it did nothing...
@EnderPsp:
Last week I disable the apps that are running in the background and I noticed a small boost in battery perfomence.
Click to expand...
Click to collapse
i also did this at the same time
refer here
http://forum.xda-developers.com/showthread.php?t=1302541
running the taiwan SEA rom
flashed it a few weeks ago
Tried restoring in zune to nodo
it seems microsoft does not want u to go back to nodo
anyone can confirm?
the phone restarts with the black screen of the phone connected to computer picture . Says restoring , then throws up an error and restarts to normal
But something peculiar happened. My battery life improved after this error message. not sure why..
has it got something to do with zune "resetting" ot "modifying the phone??

FiyaFleye said:
I don't understand how you get 4 hours when I play music/podcasts all day at work, text all day, use apps, and go online & my HD7 makes it through at least my 9 hour work day
Sent from my HD7 using Board Express
Click to expand...
Click to collapse
Either you are lying, or you are mistaken and are talking about another phone.
Because Mango won't last that long.

FiyaFleye said:
I don't understand how you get 4 hours when I play music/podcasts all day at work, text all day, use apps, and go online & my HD7 makes it through at least my 9 hour work day
Sent from my HD7 using Board Express
Click to expand...
Click to collapse
I never said I understood. I just know that the battery drains ridiculously fast and I lost over well 10% an hour, easily. When it's at 67% the battery saver says 2 hours remaining, and it's not lying. It has worse battery life than a cheap laptop.
Unusable as a daily driver because it dies way too damn fast.

I wouldn't call it horrible on my Focus, but it is definitely more of an issue than it was with NoDo. Following the same usage patterns as before I am lucky to get 12 hours out of a charge, where on NoDo it would just barely last through a 16 hour day. So I either charge it midway through the day, or don't use it as much. Right now I'm not using it as much .

I found change the Brightness to low instead of Automatic saves a lot of battery usage, I am so surprised.

xflier said:
I found change the Brightness to low instead of Automatic saves a lot of battery usage, I am so surprised.
Click to expand...
Click to collapse
Yeah but in daylight you can't really see it then. Which is too bad.
I actually would've thought that the Focus would have a better battery as they have the AMOLED going on.

xflier said:
I found change the Brightness to low instead of Automatic saves a lot of battery usage, I am so surprised.
Click to expand...
Click to collapse
I found that out many months ago. I don't know if it makes a difference on all phones, but it significant on the Focus. Unfortunately, my Mango battery drain observations are with the brightness already on Low.

The Focus has a Super AMOLED screen, which has 5x the outdoor visibility and 20x the viewing angles of the HD7. That may work for that phone, but it would make the HD7 unusable for me outdoors; and I'm assuming many other people. It only has an LCD screen. With automatic brightness I can already see my own reflection in the screen more clearly than the actual phone/OS images...

"The Focus has a Super AMOLED screen, which has 5x the outdoor visibility and 20x the viewing angles of the HD7. That may work for that phone, but it would make the HD7 unusable for me outdoors; and I'm assuming many other people. It only has an LCD screen. With automatic brightness I can already see my own reflection in the screen more clearly than the actual phone/OS images..."
this makes me feel better that I picked Samsung phone, I was regretting Samsung focus because It randomly reboot and also after 10-15 mins HD video recording, I suspect it is quality issue.

Battery meter is just useless

Hi,
On my One-X battery meter is completely inaccurate. Sometimes it sits for hours on one value (e.g. 90%) and then suddenly drops (with no CPU/data activity whatsoever) to for example 80%. This results with very jerky battery use graph (attached mine). I am on 1.29.401.7 and done multiple full discharge/charge cycles, but it does not make any difference.
I have never seen such bad battery meter behavior on any other Andoid phone. Have you got similar problem?

I have the exact same problem actually.

Same here. It's as if it doesn't update the battery meter when it's in sleep (fifth core running). I suspect it's because of the T3 architecture and power management. As soon as you wake it, after maybe a minute, it updates the battery status...

Mines does it. Can sit on a %age for an age then with little use it will plummet.

@Op,
No I didn't notice such a problem on a unrooted One X and with no modifications running the latest OTA update 1.29.401.11.
Did you play with battery apps or did you modify something yourself which could cause this issue? Did you investigate what could cause it?
How long do you have your device, did you install apps? Can you provide more info about it maybe? Do you softreset your device?
Did the problem exist when you bought the device?
Thanks.

So it must be general problem then. It happens to me not only in sleep mode, but when browsing the web, etc.
I think these sudden percentage jumps and meter inaccuracy also contribute to all these battery life complains from various people. I was personally shocked when after a few minutes of web browsing battery dropped instantly from 30 to 20%. It looks like crappy battery, but in fact seems to be just dodgy meter...

Laurentius26 said:
@Op,
No I didn't notice such a problem on a unrooted One X and with no modifications running the latest OTA update 1.29.401.11.
Did you play with battery apps or did you modify something yourself which could cause this issue? Did you investigate what could cause it?
How long do you have your device, did you install apps? Can you provide more info about it maybe? Do you softreset your device?
Did the problem exist when you bought the device?
Click to expand...
Click to collapse
I have got the phone for almost a week now and I am pretty sure this problem has been there from the very begining. I initially though this is because a couple of full charge / discharge cycles are required to calibrate the meter, but it did not make any difference. My phone is not unlocked, no mods or battery apps. I did not try soft reset though.
It looks to me that meter is somehow not updating during the sleep. When device wakes from sleep, after a couple of minutes value drops significantly. This problem is probably a reason for various false claims that One X does not consume a single percent of battery during the overnight sleep.

Yeah, i have the same thing. Sometimes my battery drops about 2 or 3 percent at once, sometimes 10 percent...pretty annoying.

Thanks for your reply.
I'm new to Android but I do have some Windows Mobile experience.
It's weird to me seeing people having such problems because I realy don't experience it.
My battery meter is constant, also after a night sleep.
Maybe it's because I use my device different as others I don't know, it's strange to see all these reports in XDA forum as the One X to my opinion is a very cool device.
Maybe you could try some battery percentage apps and see if it realy is that insufficient?
aszu said:
I have got the phone for almost a week now and I am pretty sure this problem has been there from the very begining. I initially though this is because a couple of full charge / discharge cycles are required to calibrate the meter, but it did not make any difference. My phone is not unlocked, no mods or battery apps. I did not try soft reset though.
It looks to me that meter is somehow not updating during the sleep. When device wakes from sleep, after a couple of minutes value drops significantly. This problem is probably a reason for various false claims that One X does not consume a single percent of battery during the overnight sleep.
Click to expand...
Click to collapse

No problems with the battery monitor whatsoever (unrooted) 1.28.161.9

Laurentius26 said:
Thanks for your reply.
I'm new to Android but I do have some Windows Mobile experience.
It's weird to me seeing people having such problems because I realy don't experience it.
My battery meter is constant, also after a night sleep.
Maybe it's because I use my device different as others I don't know, it's strange to see all these reports in XDA forum as the One X to my opinion is a very cool device.
Maybe you could try some battery percentage apps and see if it realy is that insufficient?
Click to expand...
Click to collapse
I used your excellent ROMs on my HD2 in dark WM6.5 ages . I am glad to see you here with One X!
I installed Battery Meter Widget and (if the readings are correct), my One X consumes about 10-15mA during the sleep with Wifi and 3G on. I will keep an eye on the percentage.
Don't get me wrong - besides of erratic GPS and dodgy battery/power management problems, I really love this device.
I really wished that international One X version was based on S4 SoC (superb GPS with GLONASS and great power management as S4 is a 28nm chip). It is such a shame that dodgy Tegra 3 ruins this excellent device...

Hello, maybe this behaviour is only due to the voltage sampling/display ...
Someone here says the native battery app was only at 5% precision at display
and it looks like it updates in long time samples too ( 5 minutes ? ) ...
Knowing that Li-Ion goes from 3600 mV ( 0% ) to 4200 mV ( 100% ),
it means 600 mV of voltage variation from empty to full, with 1 mV precision.
So 1 millivolt is 0.2% of battery charge.
The display should be really more precise if all voltage precision was used.

aszu said:
Hi,
and then suddenly drops (with no CPU/data activity whatsoever)
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looking at that screenshot you have posted the sudden drops appear to be perfectly aligned to the 'screen on' or 'awake' periods so the most likely (and obvious) cause is that using the phone causes most battery use. I have seen this with many phones, I think its normal. Being in standby doesnt use much power at all but lighting the massive 4.7" screen and running a quad core processor does, so when you use the phone it uses loads more juice... thats my analysis anyway

f_padia said:
looking at that screenshot you have posted the sudden drops appear to be perfectly aligned to the 'screen on' or 'awake' periods so the most likely (and obvious) cause is that using the phone causes most battery use. I have seen this with many phones, I think its normal. Being in standby doesnt use much power at all but lighting the massive 4.7" screen and running a quad core processor does, so when you use the phone it uses loads more juice... thats my analysis anyway
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No, this is different. Drop in fact seem to be related to wake up from deep sleep, but the point is that this drop is massive and instant i.e. battery instantly drops from 30 to 20, bypassing all other percent states in between. Also, I am sure battery state does not update properly in deep sleep in many cases. At some point I left my phone for almost a day alone (wifi, 3g, Gmail and exchange sync, etc) and it did not lose a single percent, but as soon as started using it I observed instant 20% drop.

Same problem here even after hard reset
Sent from my HTC One X using XDA

d33f said:
Same problem here even after hard reset
Sent from my HTC One X using XDA
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+1
And I have even worse problem, can anyone help me?
Take a look at my thread (not highjacking yours, just want some help too), my current widget never reads a real value AFAIK.
It stay with -850 for more than an hour at times...
And my battery life is dismal...

So this means that seeing no battery discharge throughout the night in sleep mode isn't due to excellent power saving feature of the companion core but is in fact poor battery meter?
And yes, my One X shows fast and huge discharge (3-5% at once) when I use after being in long sleep mode

samuelong87 said:
So this means that seeing no battery discharge throughout the night in sleep mode isn't due to excellent power saving feature of the companion core but is in fact poor battery meter?
And yes, my One X shows fast and huge discharge (3-5% at once) when I use after being in long sleep mode
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I think it too. Phone on sleep with data and sync on for 1 or 2 hours and % don't change. Use it for 2 min. and it suddently goes down by 5/10%
In my opinion the battery meter lacks of accuracy. This brings to inaccurate real time current calculations and wrong information about what's consuming power when we use it. That's bad!

I'm also seeing these big drops. For me it seems to happen between 100%-60% battery, battery level will drop anything from 5%-10% chunks at a time. After 60%, it does seem to be more stable and drop in 1-2% increments.
I've recalibrated the battery through CWM a couple of times but still get this issue.

It almost seems like there's a bug in the code that is causing the fuel gauge to not update.
I can tell you this, I modified other HTC phones battery driver. The nexus one driver for example updates volt, percent, temp, every 50 seconds while the screen is on. When off the sample poll changes to 10 minutes per update. This is real easy to see in the driver code, and you can filter dmesg log for "batt" and see the time stamps do in fact match this.
But the one x looks to be getting hung up on that part. Anyone know if kernel code has been released yet?

In your experience, how does wifi/BT/nfc standby affects battery?

Just want to know your thoughts about having wifi or Bluetooth enabled all the time, even with no connection or pairing with nothing, regarding battery life
I ask this because my test would not be accurate as I always use the phone differently (moving to different places, calling, music) apart from playing with kernel and other settings... So can't really tell the difference in that
Please don't tell me, just turn them off when leaving home or leaving your car. My point is to get it connected/paired with no need to unlock phone, turn on... etc... xD
About NFC I saw a module to enable it when screen off. But I read comments that it causes big drain, obviously

On the previous build MH19C I was pretty sure if wifi 5GHz is enabled and available, it will drain and also wake like crazy. This happens in my office but not at home where I don't have a 5GHz wifi or even wifi ac, but is widely used in office, with multiple physical AP's. Now already on the May update, I no longer enable 5Ghz wifi and backgroud scanning just to be safe.

Less than other devices due to the Android Sensor Hub and Doze.

while not in wifi i have data which drains tons of battery anyway, so i dont even bother with any miniscule effect wifi scanning might have. i would advise you to put it off your head too, there are thousands of tiny unessecary battery drainers in your phone, it would sap your mental health trying to deal with anything more than the big ones (data/screen/bugged apps) for only few % of battery.
if the phone is able to last till bedtime or return to home, then it does not matter to meddle with anything. charge it every night and if comes to worse it charges to 50% in few minutes

Thanks for responses
Giorgos Chatziioannou said:
while not in wifi i have data which drains tons of battery anyway, so i dont even bother with any miniscule effect wifi scanning might have. i would advise you to put it off your head too, there are thousands of tiny unessecary battery drainers in your phone, it would sap your mental health trying to deal with anything more than the big ones (data/screen/bugged apps) for only few % of battery.
if the phone is able to last till bedtime or return to home, then it does not matter to meddle with anything. charge it every night and if comes to worse it charges to 50% in few minutes
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Exactly, that's why I want to know if the % is noticeable or not
It's a good advice. However it's also good to keep things in order because battery cicles are limited in phones and my goal is to keep the 5x more than 2 years xD
So I wouldn't be fine just getting at the end of the day, it's good to preserve and not drain unnecessary drain, considering this battery is not removable, plus it is already 'bad' being new haha
Sent from my Nexus 5X using Tapatalk

Javi22 said:
Thanks for responses
Exactly, that's why I want to know if the % is noticeable or not
It's a good advice. However it's also good to keep things in order because battery cicles are limited in phones and my goal is to keep the 5x more than 2 years xD
So I wouldn't be fine just getting at the end of the day, it's good to preserve and not drain unnecessary drain, considering this battery is not removable, plus it is already 'bad' being new haha
Sent from my Nexus 5X using Tapatalk
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i dont know about battery cyrcles, but replacing battery on 5x is not hard - watch a video about it as to not make any hasty mistake, and its piece of cake.
also its better if the battery is not too low when recharged and not too hot. 5x already has a annoyingly protective temp threshold so you dont need to worry about ruining your battery that way, while its better to recharge every night (or more often if you need) even if there is plenty of juice in the phone cause that is healthier for the battery.

If reducing battery cycles is your main goal, you have to turn them off.
I'm keeping wlan (connected at least 50% of the time with decent-v good connection)/bt (most of the time no connection, only in car and for bt speakers) switched on all day and they together take 7-8% battery on (my) average use (~10-15% left before charging every night), of course much less (in relation) when heavily using the phone.

emp504 said:
If reducing battery cycles is your main goal, you have to turn them off.
I'm keeping wlan (connected at least 50% of the time with decent-v good connection)/bt (most of the time no connection, only in car and for bt speakers) switched on all day and they together take 7-8% battery on (my) average use (~10-15% left before charging every night), of course much less (in relation) when heavily using the phone.
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Thanks
That's what I wanted, some numbers about your experience
Fine then. Once I get some rom and kernel stable I will check for myself. For now it will be disabled when not using (tasker helps too)