yashsingh1/xdaforums huggingface dataset:
[HD2 Windows Phone 7 Development] Blame73:
I'm on XBmod 1.04 too and my battery normally lasts 1,5 days.

I will now give this trick a try hoping this will take it to two full days.

Just a question: once you switch to video mode and then exit the camera, when you later on go back to the camera app, do you find it still is on video mode? Because I find it's back to camera mode.

Thanks for the tip, anyway!
[HD2 Windows Phone 7 Development] zcdg:
Thanks for additions and stat. Yes you are absolutly right - need to wait for camcorder to Autofocus - few seconds.
[HD2 Windows Phone 7 Development] zcdg:
Yes if you go back to camera again it will be in camera not video mode. But it doesn't make any sence. Important to exit from video once only.
[HD2 Windows Phone 7 Development] and2:
same for me
[HD2 Windows Phone 7 Development] sathara:
its working ... but why ?
[HD2 Windows Phone 7 Development] criminalben:
Maybe the camera is just running all the time causing the high battery usage. By switching it to video, it disables it?

Dunno, but it works - much better now.

Thanks.
[HD2 Windows Phone 7 Development] felixk:
Getting a Big Brother feeling now....

Heather Kuykendall
[HD2 Windows Phone 7 Development] da_mayhem:
Interesting. How about a cooked rom with camera disabled? I think that would be the best way to know if really the camera is one of the causes of the battery life problem.
[HD2 Windows Phone 7 Development] lolkoz:
Not following...How is that article related with this?
[HD2 Windows Phone 7 Development] tyron.townsend:
You guys are probley right it is da camera the camera is always running I charged my battery up in a stuck hd2 with the power off and I bought a brand new standard hd2 battery. After the new battery was charged to its fullest I put it in my hd2 wp7 and took a couple pictures and my battery decline very fast and I did this with everything turned off like the WiFi Bluetooth xboxlive and etc
[HD2 Windows Phone 7 Development] pharmeceutikle:
Does our phone camera have location abilities?

Have you read about the Iphone users concerns? I believe our cameras have location abilities. If it is always on then I guess our telecoms are logging our every move! Not really off topic cuz it involves with the camera always on theory which could lead to our battery draining problems.
[HD2 Windows Phone 7 Development] lolkoz:
Nope. It has nothing to do with that location services, since disabling them in options doesn't make any difference in that battery drain of ours.
[HD2 Windows Phone 7 Development] zcdg:
It is right - drain is not related anyhow to location and most probably not to the camera itself. It is just kind of bug in HD 2 WP7 release. When you start and exit from video mode it shuts down unknown process that shouldn't be started at the begining. May be it is related to autofocusing mechanism because in video mode autofocusing must be finished before exit to have effect.

It is anyway impossible to tell with our knowledge. I think only Cotulla and DFT may be able to figure this out. If even possibly for them.

P.S. This problem applies to HD2 only, not to original HD7 WP7.
[HD2 Windows Phone 7 Development] sj1992:
So everytime i want to take a pic i have to go into video mode after using the camera and wait for it to refocus and then press the middle button? :)
[HD2 Windows Phone 7 Development] zcdg:
You need to switch to video only once after reboot of WP7. No need to that every time after use of camera. Just do video trick once after reboot and do with the phone whatever you like. At least in my case. I have tested this.

You can also use back button or middle - whatever you like.
[HD2 Windows Phone 7 Development] sj1992:
Haha i was going onto video mode everytime i finished using the camera! Thanks :)
[HD2 Windows Phone 7 Development] iba21:
guyz, don't know why but i don't have the 40ma problem, i'm using HD2O rom

current before 'hack' is 5ma, after is 3ma

i have all off, only 3G for sms and calls

oh, i use an hack on registry, put 1 in Enable instant resuming, don't know why but, 3 is the default mode, 0 is for multitasking, 1 is the best for a good performance (i see a better performance in browser than default mode)..

ok, i was trying another time, and, now battery current writes 3ma, on FIRST BOOT without this 'hack'

so, i have a normal consuption without hack

oh, i'm using radio 2.12.50

EDIT: it's not the istant resuming hack, i put it on default mode and i have already 3ma of power consuption.. so.. for me it's all ok
[HD2 Windows Phone 7 Development] Blame73:
Well, it seems the trick is working on my Xbmod. I'm on the third day on normal use (some wifi, some music, some phone calls, some sms, some data...) and I still have 35% left, so I will definetly complete three full days.
[HD2 Windows Phone 7 Development] zcdg:
It is strange. All ROMs i have tried - including HD2O - gave me 40-43 ma before trick. Used same radio 2.12. Please try to do reboot and measure current several times in interval 5-10 minutes without trick. And please turn data on - i tested with data on. I keep data on all the time. Please report results. Thanks.
[HD2 Windows Phone 7 Development] iba21:
i have a problem with data on.. I dont have a flat connection for mobile data,so, i'll pay too much for a test.. I can try to use wi-fi data on.. Or.. Maybe is battery tools, upload me your battery tool, i downloaded uno witch called hd2 battery tools.xap

I'm trying to see if i have worst consuption with radio 2.15.. But for me is the same
[HD2 Windows Phone 7 Development] zcdg:
I use the same tool. So if data ON is expensive please don't do that. In my case data on or off didn't make big difference(like 40 change to 5ma may be just a few ma difference). Could you measure just after reboot few times 5-10 mins interval data off and wifi off. Thanks.
[HD2 Windows Phone 7 Development] iba21:
ye sure.. Im doing this a few hours ago.. Every time i see about 3-5-7 ma.. 1 Time 18ma..

I NEVER EVER SEE 40 OR SOMETHING..

Im using radio 2.15.. It was the same for radio 2.12

Im using sd sandisk 16gb class 2

oh, my battery tools is called HTC BATTERY TOOL HD2.xap, and it size is 61kb

i hope i have the right programm (i found it in this forum)

oh, i have ALL off, position too, gps, and bleam off (don't know what is but i disable it by TouchXperience app

oh, I HAVE NORMAL HD2, NOT T-MOBILE

EDIT: rebooted @ 19:26.. unlock @ 19:40.. current -5

i'm rebooting.. @19:40.. unlock @ 19.50 current -5 .... unlock @ 20:00 current -17... unlock @ 20:03 (riceiving sms) -214 (3735 Volt (right super battery) ;-) ) unlock @ 20:07 current -7 ... unlock @ 20:20 current -5 ... unlock @ 20:25 current -3

im trying to change battery tool with your.. reboot and try

i'm using your battery tool.. rebooted @ 20:33 current -118.. unlock @ 20:37 current -5... unlock @ 20:42 current -3

i suppouse my phone works as right as it can

oh.. 20:00 is 08:00 PM.. i have european time :D 21 is 9 - 13 is 1pm.. 14 is 2pm ecc ecc.. 23 is 11 pm..
[HD2 Windows Phone 7 Development] zcdg:
For me change of radio didn't change anything too. same card. But have you ever see high current like -200-300ma? It is current when phone is active. Like if you use phone for sometime - say 5mins and then immideatly measure current.
[HD2 Windows Phone 7 Development] zcdg:
What is current if you don't reboot every time - measure several times after one reboot.
[HD2 Windows Phone 7 Development] iba21:
ye sure, of cource, i see -300 on wi-fi mode, sometimes -160, sometimes -23X, ecc ecc

i'm doing this.. i'm editing previus post

http://xdaforums.com/showpost.php?p=13256556&postcount=58
[HD2 Windows Phone 7 Development] zcdg:
I am sorry - my Battery tool is different - 46.7 kb. I don't know what is difference
[HD2 Windows Phone 7 Development] zcdg:
Oh i see may be that is why - t-mobile has different hardware. I think this is reason why different results. Looks like regular HD2 doesn't have this problem at all. DFT may did all work mostly on normal HD2 not on T-Mobile. Needs to be confirmed. I think nothing related to Battery tool itself.
[HD2 Windows Phone 7 Development] iba21:
link me your battery tool.. i can try to use that..

oh, my version of battery tools is HTC TestTool (1.20.0.0)

this is tool what i'm using.. try with it.. maybe i have a bad battery tools.. or you have it
[HD2 Windows Phone 7 Development] zcdg:
My is exactly same version. I think results will be the same. Most important - i want repeat all hacking things you did with phone. may be this is reason because i didn't do anything with phone.
[HD2 Windows Phone 7 Development] iba21:
i only change default search site with www.google.it (desktop) and change instant resuming value in 1 (default is 3).. i did only this mod, on HD2O rom 1.4
[HD2 Windows Phone 7 Development] zcdg:
What did you do with Touchxperience? And how did you separatle turn off GPS?
[HD2 Windows Phone 7 Development] iba21:
with touchxperience i disabled BEAM.. don't know what is.. so.. i disabled it :D

i disabled gps POSITION in setting, and map position, photos position, all position, by putting OFF on all setting in windows phone settings

oh.. your battery tool as the same as mine.. but mine is biggher because i have icon indicator on my programm, i have an image icon with printed a battery

p.s. sorry for my english :D

i'm updating post
[HD2 Windows Phone 7 Development] zcdg:
At least defenetly it is not Instant resuming - have tried to make sure. Will try later with beam, but we have different setup any way - i have location on everywhere, xbox live is off only. I think main difference is phone MODEL HD2 or T-mobile HD2.
[HD2 Windows Phone 7 Development] zcdg:
Your phone works right somehow without any video trick. Thanks for information. I don't think it is ROM - all custom roms made from DFT with cosmetic changes. And i did try rom you using.
[HD2 Windows Phone 7 Development] john280zx:
yes it really does work !!!!!!!!!!!!!!!!

using xbox, & radio 2.15
[HD2 Windows Phone 7 Development] iba21:
t-mobile????
[HD2 Windows Phone 7 Development] iba21:
if you want i can turn on gpu location.. i disable it because i don't use it, so, it may increase battery consuption

God loves me :D
[HD2 Windows Phone 7 Development] zcdg:
You are right ;) . I think don't need to test that. Some time ago i tested turning off almost everything - no much change. Only thing reduces current to 3-4 ma - airplane mode - all radio off. But now with this simple trick i can live with almost everything on :rolleyes:.
[HD2 Windows Phone 7 Development] Geezzy:
Umm... dumb question, but which line in Battery Tool shows how much ma phone drains? The "Battery current" line?
[HD2 Windows Phone 7 Development] zcdg:
it is right
[HD2 Windows Phone 7 Development] Geezzy:
Nice. I have -5, so I can say, that the hack works :)
[HD2 Windows Phone 7 Development] zcdg:
What phone do you have T-mobile or original HD2?
[HD2 Windows Phone 7 Development] john280zx:
yes in california
[HD2 Windows Phone 7 Development] zcdg:
T-mobile???
[HD2 Windows Phone 7 Development] Geezzy:
T-mobile and I am using Xbmod ROM. But have I checked it without hack, and you know what? I have -7 anyway, so, I think, there is almost no difference.
[HD2 Windows Phone 7 Development] zcdg:
So you have after reboot and several measurments without trick -7ma? Yes? If yes what is on and what is off and did you do any other hacks with phone? Is it US T-mobile?
[HD2 Windows Phone 7 Development] JonnieLasVegas:
Finally gave it another shot. I saw my battery usually drains at -555!!!! With the "trick" it took it down to -427!!! Big improvement, but can't figure out why my battery drains so much. This is with no apps running. This was right after restaring my phone, so I know it couldn't be due to email or apps running. Now I have to see if it's my radio, rom or both.
[HD2 Windows Phone 7 Development] JonnieLasVegas:
WHOA! Now ot shot up to -748!!! Don't know what to think. But it does explain why my battery never lasts more than 3 hours!
[HD2 Windows Phone 7 Development] Geezzy:
Yes, after reboot and several measurements I have something around -7 on standby, sometimes it is -5 or -4, and sometimes it is -8 or -9, but usually -7.

I have US T-Mobile 1024 HTC HD2.

Talking about hacks, I just did the stuff from here http://xdaforums.com/showthread.php?t=912218 except Chevron, because Xbmod is unlocked allready. So, I think, no unusual hacks.

HSDPA - ON

Wi-Fi - ON

Screen - Auto

Location - ON (but, I think, this one only states the allowance for apps to use GPS, not all time GPS in background, because I don't have that GPS icon in notification bar)

BT - OFF

Anyway, with normal use my HD2 can take ~12h. But probably my normal use is pretty abnormal... :)
[HD2 Windows Phone 7 Development] john280zx:
yes T-mobile
[HD2 Windows Phone 7 Development] john280zx:
T

yes T mobile
[HD2 Windows Phone 7 Development] zcdg:
Tested your settings - i have same 40-43 ma standby with Xbmod. Means somehow this trick is not for you - you have already good standby, but then your usage is high - 12 hours is too short. My phone lasts about 2 full days with my hormal regular usage. But i don't use wifi at all - only unlimited cell data. And use bluetooth for handfree in car.

Somehow some phones gives low standby after reboot... no body knows way..
[HD2 Windows Phone 7 Development] zcdg:
This realy very high! I have never seen more than -350 ma.
[HD2 Windows Phone 7 Development] Geezzy:
My daily usage is ~1h gaming, about 1h reading RSS news and surfing internet, and some time surfing marketplace in order to download some new apps. Of course, I text a bit - about 70 sms every day + ~30 minutes talking. And both of my email accounts are synchronising every hour, while HTC HUB synchronises every 3 hours. I think that this type of usage is called "On demand" :)

Today I haven't played any games and after 14h I have 11% left :)
[HD2 Windows Phone 7 Development] zcdg:
I think you have quite high usage so your time is notmal for battery. During normal operation with or without internet average current is 200-300 ma at the best phone can realy actively work 4-6 hours. But with low usage it can survive up to 4 days with low standby 3-9 ma.
[HD2 Windows Phone 7 Development] mrmomba:
i confirm this hack.

working well, and my battery lifetime is realy increased. from only a half day, ( three or four hours, up to one day without any charging.

it is realy nice, so a have more fun with WP7!

My Usage: wirtting SMS, a few minutes surfing, and using the fone. Use TapATalk and that was it. My current charging is 1/3. last Load was 9 'o Clock in the morning. After using five times the alarm.
[HD2 Windows Phone 7 Development] JonnieLasVegas:
I'm going to try flashing a new rom, & not do the reg hacks. See if that's what it could be.
[HD2 Windows Phone 7 Development] navidnouri:
here is what is going on

if you enter camera with green key and then you close it by the windows logo key your camera program DOES NOT End services for using camera and camera does not turns off at all so your camera is on all the time you are using your phone but if you switch to video mode and exit the camera with middle key camera services stops woring and it shuts down.

you can confirm if your camera shuts down with the sound of closing shutter comes out from your camera. put your ear near camera and hit the windows key, if camera stops you should hear a tick sound from your camera but if it soesn't you don't hear any..

i would be glad if everyone confirms this bug in ROMs

after using this bug to End camera services i am able to use my HD2 WP7 as how i used it when WinMo6.5

thanks dor sharing info
[HD2 Windows Phone 7 Development] ioulian:
Me too, can confirm this 'hack'. My phone was on standby all night and the batt-indicator has not dropped. WIFI, Location and cellular data was on. Thx!
[HD2 Windows Phone 7 Development] iba21:
man, WITH RADIO 2.10.50.28 i have THE SAME power consuption as you have, so, i have about -40 -43 ma in normal state WITHOUT fix, with fix it will be change in -3-5-8 ma

so, try to change radio :D
[HD2 Windows Phone 7 Development] zcdg:
I have tried all radios from 2.08 to 2.15 - always have 40-43 ma without trick. Strange is't it?

Worst in my case for the data speed is 2.15. best 2.10 or 2.12
[HD2 Windows Phone 7 Development] EscapeE:
but how do we see the battery drainge????:confused:
[HD2 Windows Phone 7 Development] dazza9075:
HTC battery tool, you need to be quick, run tool allow it to sleep for a while then as quick as you can get back in to HTC battery tool, if your quick enough you will see the sleep state consumptions
[HD2 Windows Phone 7 Development] Amedeus:
Looks like this might be the problem !

Hi zcdg

Very interesting. I had noticed since Feb post update to wp7 that the battery sometimes lasted max 1 day and other times lasted some 3.5 days with similar use -no obvious explanation till now as I DO use the camera/video every week. So, applied your fix and the battery does indeed seem to last about 3 days thus far. Battery drainage seems to now be circa 4mA where as before it seemed to vary around 190mA.

Will continue to monitor.:)

If this is the problem I have to say WELL DONE !!

We should inform DFT etc of this find.... have you done this?

[BTW I use the basic DFT image]

Cheers for now

Amedeus
[HD2 Windows Phone 7 Development] zcdg:
Thanks for information. I don't have any idea how to inform Cotulla/DFT about this thing. May be they know about this already, but i didn't inform them. If anyone know how or can do that please.
[HD2 Windows Phone 7 Development] robertitogonzalvo:
I confirm this hack works... got more than a day battery life from my standard HD2 phone.. hopefully this hack can be integrated to future dev ROMs... but this is good hack none the less.. :)
[HD2 Windows Phone 7 Development] Cero92:
I'm not a cook, but it's possible to remove the default camera app and integrate SHCamera App instead? It will fix this problem and give us a better camera app by default
[HD2 Windows Phone 7 Development] zcdg:
No one here has tools and knowledge to replace camera and fix this problem. People who may be able to do that are DFT and Cotulla. I think even they can't do that.

Even replacing camera doen't mean fixing permanently this problem.

Because use same drivers. Actualy you can use for this trick SHCamera app - works same way as HTC camera.

Even this problem may be not really related to camera itself.
[HD2 Windows Phone 7 Development] Cero92:
So if i use SHCameraApp to take a photo i have to do this trick again?
[HD2 Windows Phone 7 Development] zcdg:
You just need to do that trick once only if you reboot. Until next reboot you can do whatever you like.

This way - if reboot -> trick -> use as you like -> if reboot see begining:)
[HD2 Windows Phone 7 Development] lihkin:
Hello u can call me a noob as i m new 2 windows phone 7 n also HD2 can any1 explain me wht needs 2 be done i mean wht i have understood is as follow

1.) Start the camera by pressing the green button.

2.) Switch to the video mode.

3.) Then press the windows button to do go to the main screen n standby

After that wht do i need to do keep camera open in background is that it or reboot d phone im confused

also how you guys check the current & what is checked battery outside of phone with load.

I am using [ROM][MULTILANG] 11.03.11 HD2O© v1.04 WP7 BUILD 7.0.7008.0 SPOOF [online]

every single thing is working fine except for battery as it get drain 2 soon even with usage of 1hr continous net activities
[HD2 Windows Phone 7 Development] HD2-WP7:
that's pretty much it. u dont need to do anything else. dont worry about camera being open in the background coz it's actually NOT open. only thing is, if u reboot, u need to do these steps again.
[HD2 Windows Phone 7 Development] Amedeus:
I believe you also have to wait a few seconds for video camera to focus before exiting...

Amedeus
[HD2 Windows Phone 7 Development] HD2-WP7:
amazing! now i'm getting more than 40 hours!

i wonder what is behind it. could it be that upon boot, camera is actually turned on (without display)? and gets to 'off' mode when exiting it from video mode? just a thought. other than this i couldn't think of a reason for this tweak to work.
[HD2 Windows Phone 7 Development] zcdg:
For sure - no body knows right now i think. But could be reasons you mentioned. Could be some how related to focusing mechanism coz you have to wait in video to focus.
[HD2 Windows Phone 7 Development] logan_x:
Hey, thanx for this hack, i'm have a HD2 T Mobile with original DFT rom, and works, the battery life increase i'm testing more right now
[HD2 Windows Phone 7 Development] cj1982:
Thanks for the hack. I'll be back to WP7 for sure.
[HD2 Windows Phone 7 Development] gx211:
Sick

that's very cool thank you for that will be very helpfull
[HD2 Windows Phone 7 Development] JonnieLasVegas:
new rom..new results!

Well for me I really think it was my former rom that was causing me issues. I was using the Twilight rom, which is very smooth, but would cause my phone to heat up crazy fast. It would be too hot to hold at times & drained my battery like crazy!

I switched to blacksideseven rom & no more overheating (minor heating, but nothing like before), & my battery stays around -9. With the hack performed I stay at around -3 to -5 on my TMOUS HD2. I'm loving it! Thanks for this info.
[HD2 Windows Phone 7 Development] Pilch69:
Batt life fix

Tried this fix on my hd2 and it trebled the life of my batt, 65 hours so far with one full charge and around 30% left
[HD2 Windows Phone 7 Development] zcdg:
Update:

Tested HD2O 1.12 nodo - trick works perfectly right away getting 3-5ma!!! After a day of use(not much use) - battery life is amazing!!!

Tested original NODO(YukiXDA) one more time(total two times flashed this rom to be sure) - couldn't get stable low standby - unpredictable, most of the time 40-42ma sometimes even higher. Tried so many times. I don't know why results are not so good.

Tested Xbmod(my favorite) - trick works perfectly right away getting 3-5ma!!! But overal feeling for me this time better from HD2O 1.12(it is just my feeling)

Will stay for now with HD2O 1.12 .....
[HD2 Windows Phone 7 Development] don_sefer:
May I am blind, but where can I get this battery tool? Cant find anything about it. Flashed HD2Owners WP7 Build today. The newest one...

best regards
[HD2 Windows Phone 7 Development] zcdg:
It is attached on page 7 of this thread:)
[HD2 Windows Phone 7 Development] wolfpt:
sorry but here do you se THE MA in batery tools?? i cant see that there to see if my phone go low in ma or stay in midle of 40~
[HD2 Windows Phone 7 Development] PayAndDie:
Thank you sooo much!! Finally working!! The version I was using didn´t work on HD2Owners new ROM but this one does :)!!!
[HD2 Windows Phone 7 Development] arsenique:
Weird

I'm using XBmod 1.10 on EU HD2 and I've just found this trick and deployed Battery Tool to test it. I was really surprised when I saw that before the trick my current was -382 (with MINUS prefix... wtf???) and after the trick it is -7 (again with minus prefix).

Can someone please elaborate this?

Also, when I put my phone to charger this afternoon, the battery was about 40%. Few minutes after, I had to go so I've disconnected the charger and the phone popped up a message that the battery is critically low :confused:

Restart did the job but I'm still pretty confused about that.
[HD2 Windows Phone 7 Development] zcdg:
To measure standby you need to wait a few minutes in sleep before you go as fast as you can to battery tool. you may do it few times because to measure you have to wake phone and if it will take to long you get battery tool will measure active state - you may not get standby every time. If you see -3-9 it is good standby. so -7 was standby good one, -382 actively running phone - time of measurment was not correct. Before trick standby usualy around -40.

Second part - i personaly never see this, but heared about this. It could be bad battery driver - which we can't change anyway. If you see this again you may try to change the ROM to diff. one. I know they are basicaly same, but may help. HD2 ROMs are good, but low level drivers full of bugs coz not made professionaly for HD2 by HTC.

Don't worry about -382 it's may be not normal, but usual active current for HD2 WP7.