Database Users

battery life suddenly gone awry

hi all,
I've installed a raft of apps in the last few days (perhaps that was foolish) on my sim-free white Hero, and suddently the battery life has gone to pieces. It now won't even last the night *in standby with wifi off*.
Any ideas as to the known battery killers, or any way I can track down which is causing this? I don't really have to want to start removing apps at random and monitoring.
There's nothing particularly unusual in my list of running apps, following a power cycle (is there?):
Shake Awake, NetCounter, AK Notepad, OI Update & Countdown, Tube Status, Battery Widget, BBC News widget, Peep
(although that does raise a separate question: why do things like ShopSavvy, AK Notepad, start at boot, when presumably they're not really doing anything until you use them?)
Of course, I have other things that get started asynchronously, just not at boot, e.g. SMS Popup.
anyone got any ideas, please?
thanks much indeed.

cdmackay said:
hi all,
I've installed a raft of apps in the last few days (perhaps that was foolish) on my sim-free white Hero, and suddently the battery life has gone to pieces. It now won't even last the night *in standby with wifi off*.
Any ideas as to the known battery killers, or any way I can track down which is causing this? I don't really have to want to start removing apps at random and monitoring.
There's nothing particularly unusual in my list of running apps, following a power cycle (is there?):
Shake Awake, NetCounter, AK Notepad, OI Update & Countdown, Tube Status, Battery Widget, BBC News widget, Peep
(although that does raise a separate question: why do things like ShopSavvy, AK Notepad, start at boot, when presumably they're not really doing anything until you use them?)
Of course, I have other things that get started asynchronously, just not at boot, e.g. SMS Popup.
anyone got any ideas, please?
thanks much indeed.
Click to expand...
Click to collapse
I had the same issue when i put on battery widget, I saw the % going down while watching the phone.

oh! that's ironic
I do get the impression that it's more recent than that, but it could well be, I suppose. I'll remove it and see... thanks.

I've heard that the bbc widget drains the battery.

This is something Google should address with android market. The system should apply various forms of stress testing to all applications and rate them according to connectivity requirements, CPU load, power consumption etc.

I think for people who have a serious drain they need to hard reset and start again, put 1 program on at a time and leave it a day or so with that program on, finding out whats causing the drain.
Logically thinking, i'd expect it to be a program that is using internet in the background, like the bbc widget which could still be downloading without you knowing.

good points, ta.

I already noticed this. I checked the CPU load in idle mode and normally it should be around 10% (using "System Monitor").
Sometimes however, depending on what apps were running, it is increased to 30-40% and staying there constantly.
Closing all apps (incl. Sense) does not help either, the CPU load won't go down again until i make a complete device reset.
So i guess some processes are stuck in thise case causing the high load (and draining the battery empty).

My GPS did not disconnect, after foto geo-tagging, and that goes quick as well.
Also the BBC-app was installed, but got rid of it because I didn't use it. Might be a coincidence.

The BBC app polls really often. There's no setting to tell it how often to poll. It really kills the battery fast

I wonder though: even when the phone is in standby? something is killing me in standby. Oddly, it seems better if the phone is on
I'll try removing the BBC app overnight, and see...
then the battery widget tomorrow, etc...

cdmackay said:
I wonder though: even when the phone is in standby? something is killing me in standby. Oddly, it seems better if the phone is on
I'll try removing the BBC app overnight, and see...
then the battery widget tomorrow, etc...
Click to expand...
Click to collapse
Turn on usb debugging... download the SDK.. cd into tools.. and run
adb logcat
or to send it to a file:
adb logcat > log.txt
(and ctrl + C to stop logging)
Inspect the log file and you'll see what its upto pretty quickly. Maybe its overkill, but I fire that up when it starts behaving strangly.
EDIT: err to answer your question.. yeah the widgets wake the phone up to grab new data, which eats battery. The BBC news one seems to be polling reallllly often, which is unecesarily using power.

quick update: removed BBC News and Battery Widget (separately), no change; phone still dies overnight, in fact in about 5 hours on standby, from a full battery, to totally dead.
I just this minute discovered that my phone whilst in standby is still polling my IMAP server to try and connect, and I have a huge inbox, which it was prob failing to get the headers for. Seems like a possible bug that it still does this whilst in standby, but I've disabled that account anyway. It might be the cause...

What do you mean by Standby? Just inactive? Airplane Mode?

sorry, poor terminology, perhaps. No, not airplane mode, just the screen-off state it goes into after a few minutes.
It does seem a little bit of a waste, if the phone is going to spend all night checking for new Twitter, Gmail, etc, updates, when I'm not awake to read them? So I'd naively assumed that perhaps it wouldn't do that when it's in the screen-off state. Unless you've asked for notification other than on the top bar, of course?

cdmackay said:
It does seem a little bit of a waste, if the phone is going to spend all night checking for new Twitter, Gmail, etc, updates, when I'm not awake to read them?
Click to expand...
Click to collapse
To be fair, the phone doesn't know when you're going to asleep now does it? (especially if you're a night worker).
I notice that there's an application in the market now which can automatically turn airplane mode on according to a schedule, so that may help but of course this does mean you won't get phone calls!
Regards,
Dave

foxmeister said:
To be fair, the phone doesn't know when you're going to asleep now does it? (especially if you're a night worker).
I notice that there's an application in the market now which can automatically turn airplane mode on according to a schedule, so that may help but of course this does mean you won't get phone calls!
Regards,
Dave
Click to expand...
Click to collapse
No it doesn't but I'm developing a widget which will disable data access at certain times (dependent on user) so overnight it wont use data and save battery.

foxmeister said:
To be fair, the phone doesn't know when you're going to asleep now does it? (especially if you're a night worker).
Click to expand...
Click to collapse
Right; I really meant the following, but worded it wrongly...
I had expected apps not to do data access when the phone's screen is off, unless they have been configured to notify via sound, vibrate or light.
i.e. if an app either isn't notifying, or is only notifying via the top bar, then it should disable its data access when the screen is off.
That would mean a short delay in getting updates, when the screen is back on, but I'd rather have that than spending much battery time pointless checking for updates when I'm not going to see them for ages, whether that's at night or just when the phone is sitting on the desk for hours.

nicelad_uk said:
No it doesn't but I'm developing a widget which will disable data access at certain times (dependent on user) so overnight it wont use data and save battery.
Click to expand...
Click to collapse
aha! that sounds great, thanks in advance
would you update us here when you have something testable, please?
and if it's not pushing my luck to ask: any chance that it might also have a manual switch too, for those of us who go to bed at wildly different times?
Or perhaps there is already a way to disable data access manually, with a single setting change, without disabling the phone? I think there might be...

ah yes indeed, there's even an HTC widget to disable mobile networking, whilst leaving phone enabled. That will do for now

Hard Reset and now amazing battery life

hi
last night my phone was unable to launch sense. after uninstalling most of my programs -- none of them new in the last week--and several soft resets I resorted to a hard reset.
I reinstalled my most critical programs but this time I made sure that I put most of them on the device with only a select few (games, etc) to the card. I charged it all night and have used the phone slightly less then normal but in comparison it is 430pm and i have 76% battery left. I'm usually at 76% at 10am and recharging by 3pm.
the biggest difference is that i actually think my enable/disable data connection is working as intended. I have the wifi set to turn off after 30 sec of inactivity and now when I grab the phone and unlock it the wifi has to reconnect. Minor inconvenience in my book. I'm not sure why it didn't work like that before. the only other thing i haven't done is used the bluetooth today. I'll connect that later and report findings.
thanks

the more I think about it the less I believe it has anything to do with the wifi because i was out of town 3 days last week and didn't use wifi at all--(had it off completely) and I had the same bad battery performance.

If this is your first hard reset since new, then its not such a huge surprise. The first weeks we have a new phone, we are installing/removing/forgetting to remove/incorrectly removing/'uninstalling failed' apps, themes, tweaks left right and center.
Once you get to the first reset, we only reinstal the stuff we know works, and know we want, onto a nice fresh canvas, so any bugs and glitches that have built up are gone.
Plus you know more about running the phone, more aware of when data/wifi is on/off, closing apps, stuff like that, all small things, but which together can make a big difference overall.

samsamuel said:
If this is your first hard reset since new, then its not such a huge surprise. The first weeks we have a new phone, we are installing/removing/forgetting to remove/incorrectly removing/'uninstalling failed' apps, themes, tweaks left right and center.
Click to expand...
Click to collapse
I think you got it...that pretty much sums it up. in a weird way, I'm glad I had the problem that forced a reset. although next time I'll remember to backup my opera bookmarks...lol

I have selected 30 seconds time-out as well and something (not sure what) kept trying to connect and actually connected and then 30 secs later disconnected... all that disconnecting ate my battery overnight for 25%.
I simply did this - disabled Tmobile Data and Tmobile Internet - and when I want to use it - I enable it for the time being and then disable it after. WORKS LIKE A CHARM!

Rugged96 said:
although next time I'll remember to backup my opera bookmarks...lol
Click to expand...
Click to collapse
and thats why i use opera 9.7, because it uses my synced shortcuts from the PC/activesync(though they only seem to sync TO the phone, not from, sometimes, but i can live with that)
I never could get opera 10 to see them, even though they were there on the phone.

I had exactly the same experience to the letter, i wonder if it has anything to do with the amount of memory left on the internal memory as mine was running pretty slow when sense stopped working.

kupz said:
I had exactly the same experience to the letter, i wonder if it has anything to do with the amount of memory left on the internal memory as mine was running pretty slow when sense stopped working.
Click to expand...
Click to collapse
Welcome to the forum...
I think it has something to do with it...combined with a multitude of other issues.
It should be mandatory for everyone to reset after their first 30 days--that's exactly where I'm at.

i guess my luck ran out...today has been less then optimal. about 30% left right now compared to 74% at this point yesterday. usage hasn't changed significantly and i didn't screw with any settings that i can think of.
i did notice that when i wake the phone the wifi is still running unlike yesterday.
i can't figure out why that's different.

Rugged96 said:
i did notice that when i wake the phone the wifi is still running unlike yesterday.
i can't figure out why that's different.
Click to expand...
Click to collapse
I figured out what is different and why the wifi stayed on in standby. I changed the very first BsB Tweak for Power Saving Mode. I had the Power Save Mode "ON" all day today and as a result the wifi was on all day too--hence my horrible battery usage. I don't understand how that qualifies as power saving.
I have switched it to Power Save OFF and so far the wifi turns off when the phone is in standby.
fingers crossed for tomorrow....

People most of the time forget that the oscilations on power consumption have to do with the crap mobile networks we have to have our highly sophisticated smartphones on. They are so sophisticated that automatically look for a signal whenever there's none. That 'eats' battery like there's no end! Even when we are not using the HD2 - or have its screen turned off - it is looking for network just in case we switch it back on for a bit of surfing or to download something. In fact, it consumes even more battery when it is looking for a connection than when it is not. Keep that in mind, guys.

Just wanted to say here that my HD2 hasnt been near a mains charger (or any other kind) since 8am YESTERDAY (29th June 2010).
It is 10:14am on 30th June and i still have 56% left.

i thought things were going to improve...but, about half way through the day my wifi stopped shutting off in standby. so here I am with 30% left wondering what's going on.

[TIPS] How to make your G2's Battery last longer

Its time we need a thread like this to ensure every G2 user is getting the best out of their battery.
Here are my tips:
- WiFi: Should ONLY be ON when you are actually using it!
- WiFi Sleep Policy=NEVER: it takes more time and power to seach for a Wi-Fi AP than actually staying connected to it. Settings > Wireless & networks > Wi-Fi Settings > MENU > Advanced > Wi-Fi sleep policy > Never.
- Bluetooth: Should ONLY be ON when you are actually using it!
- Use 2G when possible: If you know you are in a area with NO 3G support, than set your phone in 2G mode so it doesn't use power looking for 3G. Settings > Wireless & networks > Mobile Networks > 2G only
- Haptic feedback=OFF: I personally leave this OFF because minor vibrations are annoying plus consume battery. Settings > Sound > Haptic feedback
- Audible Selection=OFF: For obvious reasons, we use the touchscreen the entire time, enabling this will case battery drain everything you make a selection in Android, App, Web. Settings > Sound > Audible Selection
- Display - BRIGHTNESS=30%: I use about 30% brightness when indoors - when I am outside I turn it up brighter using Power Control widget. Settings > Display > Brightness.
Note: You can also leave it on AUTO, which is will provide optimal bnrightness with respect to ambient light.
- Display - Animations=Your choice: I personally have ALL of them enabled, but that is scarificing a small amount of battery power. If you do NOT need the pretty transitions, you can opt for other options. Settings > Display > Animation.
- Display - Screen Timeout=30: I leave mine at 30 seconds, as I think that's ideal for most situations. Settings > Display > Screen timeout.
- Location - Wireless networks=OFF : The phone uses tower and signal strength to calculate your APPROXIMATE location, which is a waste when you have GPS. NOTE: This feature assists in fiding your location indoors. If you plan on using GPS outside on than you should leave it OFF. Settings > Location & Security
- Location - GPS=ON: It should be ON if you plan on using MAPS or Navigation. NOTE: GPS is ONLY used when system needs it! Having it Checked OFF does NOT help battery life. The only time GPS is active is when you see the icon in the notification bar. Settings > Location & Security
MAJOR CONSIDERATIONS
- DATA - (3G/HSPA+) - Hogs the most battery, even more than the brightness of the phone. The reason for that is when you are surfing, searching, texting basically anythin that requires 3G/HSPA+ data the radio, CPU, and RAM are always working to ENCODE and DECODE data going in and out the device. This process requires all 3 major components to work simultaneously which draws more power from the the battery!
- Widgets - Widgets like facebook, twitter, weather, news do have processes running in the back which draw DATA depending on your refresh options. ie, You will draw less power if your facebook/twitter updates every 3 hours instead of 1.
- APPS - Always keep in mind that APPS like messengers and others which constantly need data DO run in the background. Background apps will draw DATA AS needed, which bring it back to the point above. Always make sure that you SIGN OUT of APPS that require background data, IF you don't plan on using them.
- Live Wallpaper - yes, it looks pretty as we all know it. Sadly, the truth is that both CPU and GPU are working hard in the background to bring a smile to your face when you look at the screen. Live wallpaper will affect your battery about 5 - 10%, dpepending on which one are you using.
- Vibration - Considered important as well.... if you are a CONSTANT texter/EMAIL-er AND you dont need Vibration, than you should turn it off. Vibration actually takes more battery power than actualy sounds.
- Volume - Should be considered important because the higher the volume the more battery power it'll take. If you can do just fine with a Mid-level volume than you should set ringer to mid level!
YOU SHOULD NOT USE A TASK KILLER APP
http://geekfor.me/faq/you-shouldnt-be-using-a-task-killer-with-android/
^^^ That explains everything about it ^^^
I'd be happy if one of the MODs made it a sticky, so we dont get Qs or reposts
and ofcourse I will also include any tips you guys have.... please leave a comment and explain why&how you think it saves battery life. I will than add it in this list

thanks for this.
auto-brightness works for me. also, wireless network location is kind of necessary because gps won't locate you when indoors. when you're indoors you don't really need an exact location anyway because you probably know where you are. but using wireless networks to get your approximate location enables you to quickly search for things nearby.
one more thing I might add - my G2 seems to constantly switch between edge and hspa. I think I recall this being an issue for the N1 too. if I'm not mistaken, switching taxes the battery. so I set the phone to only use 3G (or only 2G depending if I want to use less battery). you have to have Anycut. then crete a shortcut to "phone info." here you can control the radio behavior. WCDMA is 3G, while GSM is 2G.
also, question: anybody ever have any luck conditioning their battery? I keep hearing that it improves battery life but it's never really helped me

Thanks for the tips! Though, what are you sources saying that WiFi sleep uses more battery? Auto-brightness does work for me, it is just very slow to make changes and tends to be on the brighter side.

most of these tips are pretty much universal for most of the current and past android phones.
LET IT BE KNOWN the main reason for battery drain (slow or fast) is APPS. They drain more than talking on the phone. They also are the main reason your screen (the next big battery killer) would stay on. In other words, don't complain about battery usage if you're using your phone constantly throughout the day @ work or home. ITS NOT GONNA BE GREAT!

joebobjoe said:
Thanks for the tips! Though, what are you sources saying that WiFi sleep uses more battery? Auto-brightness does work for me, it is just very slow to make changes and tends to be on the brighter side.
Click to expand...
Click to collapse
As an Electrical engineer, I work with wi-fi chipsets... The process is that when wifi is "sleeping" it temporarily goes to OFF when you lock the phone. [exception: when not using apps like pandora]. So when you turn the phone back ON, WiFi turns back ON and searches for the AP you were connected to. >> this process of turning OFF, ON, and SEARCHING, requires a more battery power than staying connected. When you are connected the router and phone are exchanging information (packets) on AS needed basis like when we use 3G/2G.
i did try Auto Brightness, its a bit Bright for me, i'm gonna continue to use it for the next few days, see how I like it.

joebobjoe said:
Thanks for the tips! Though, what are you sources saying that WiFi sleep uses more battery? Auto-brightness does work for me, it is just very slow to make changes and tends to be on the brighter side.
Click to expand...
Click to collapse
Auto-brightness seems to be buggy on the software side. The light sensor is very quick to detect changes, but the brightness doesn't drop back once it goes up. I feel that the brightness gets set to full at too low of a light level too. Using a screen protector and case does help a little by blocking some of the light, but it's not enough.

Actually, having GPS on consumes battery even when it is not used. And quite a lot. I have seen mayor battery boost after I started to turn it off when I do not use it. (on G1).

I've done some monitoring with PowerTutor and noticed that the Facebook app significantly drains the G2's battery (even when all features are disabled). If you sign out of it you should notice a 2+ hour increase in your battery life. People in my other thread have confirmed this and I think it might be a bug with facebook 1.3.2. I recommend making a link on your home page to m.facebook.com instead of using the facebook app.
I have also noticed that the e-mail app (NOT G-MAIL), when using Exchange ActiveSync, drains a good bit of battery when used with a Hotmail account (I'm not sure if other exchange servers have this problem or if the problem is in the e-mail app itself). The remedy that I have come up with for this is to make a new G-mail account, set hotmail to forward to it, and then on the gmail website go to Settings-> Accounts and Import and under the Send Mail As: section, add your hotmail account to it and set it as the default.
This way you get g-mail's lightweight mail pushing (which is just as fast as exchange) and it's transparent to you and everyone who has your hotmail address.
Besides those two tips, I recommend using PowerTutor to diagnose any abnormally low battery life issues you may have. My power usage is way down after fixing these two problems. Once in PowerTutor, go to View Application Power Usage, set Time Span to total, disable LCD monitoring, and set Sort By to Energy usage. Reset the power profiler and lock your phone and let it sit idle for about 30 mins to 1 hr, and then look at the application power usage. PowerTutor will probably be the top one, but you should also see what other applications are sapping your battery life.
Note: PowerTutor itself drains battery, so you should not constantly run it. I think it is set to start automatically so you will want to go in to settings and turn that off.

funkadesi said:
Its time we need a thread like this to ensure every G2 user is getting the best out of their battery.
Click to expand...
Click to collapse
+1 Sticky Please.

pmstc said:
I've done some monitoring with PowerTutor and noticed that the Facebook app significantly drains the G2's battery (even when all features are disabled). If you sign out of it you should notice a 2+ hour increase in your battery life. People in my other thread have confirmed this and I think it might be a bug with facebook 1.3.2. I recommend making a link on your home page to m.facebook.com instead of using the facebook app.
I have also noticed that the e-mail app (NOT G-MAIL), when using Exchange ActiveSync, drains a good bit of battery when used with a Hotmail account (I'm not sure if other exchange servers have this problem or if the problem is in the e-mail app itself). The remedy that I have come up with for this is to make a new G-mail account, set hotmail to forward to it, and then on the gmail website go to Settings-> Accounts and Import and under the Send Mail As: section, add your hotmail account to it and set it as the default.
This way you get g-mail's lightweight mail pushing (which is just as fast as exchange) and it's transparent to you and everyone who has your hotmail address.
Besides those two tips, I recommend using PowerTutor to diagnose any abnormally low battery life issues you may have. My power usage is way down after fixing these two problems. Once in PowerTutor, go to View Application Power Usage, set Time Span to total, disable LCD monitoring, and set Sort By to Energy usage. Reset the power profiler and lock your phone and let it sit idle for about 30 mins to 1 hr, and then look at the application power usage. PowerTutor will probably be the top one, but you should also see what other applications are sapping your battery life.
Note: PowerTutor itself drains battery, so you should not constantly run it. I think it is set to start automatically so you will want to go in to settings and turn that off.
Click to expand...
Click to collapse
i think with exchange rather than having the user select the refresh interval (ie 30 mins, 1 hour) the system is a ALWAYS ON connection which constantly checks your e-mail. As oppose to G-Mail..... they as get PUSHED to your phone by google's servers every time you get an e-mail as oppose to an ALWAYS ON system.
There is a lot of hush going on about the facebook app draining the battery... hence I addressed the widget/app parts..... as of now I think we should wait for an update to see how things change, it is a software bug.

Location - Wireless networks=OFF
By turning this off won't you in turn be turning off assisted GPS?
IE - the GPS will not have an approximate location and begin locating from there but will rather have to cycle much further to dial in and take much longer to calculate your position?
Just asking - if you haven't noticed a difference then that's cool.

I also noticed shop savvy was taking up alot of my battery drain. Looks like it was running in the background non stop. I uninstalled it.

Isn't WCDMA the HSPA+ network and CDMA the 3G? I currently have mine set to edge only since the speeds are slow all across the board in my town. Even on the phones down at the tmobile store. Hoping its just a minor tower issue in my area.
Sent from my T-Mobile G2 using XDA App

funkadesi said:
i think with exchange rather than having the user select the refresh interval (ie 30 mins, 1 hour) the system is a ALWAYS ON connection which constantly checks your e-mail. As oppose to G-Mail..... they as get PUSHED to your phone by google's servers every time you get an e-mail as oppose to an ALWAYS ON system.
There is a lot of hush going on about the facebook app draining the battery... hence I addressed the widget/app parts..... as of now I think we should wait for an update to see how things change, it is a software bug.
Click to expand...
Click to collapse
Exchange activesync should push email. I had set it to push and hotmail supposively supports this. Even if it doesn't, I tried setting it to polling and it still seemed to use a decent amount of battery life. Anyways something is wrong with activesync pushing.
Sent from my T-Mobile G2 using XDA App

funkadesi said:
i think with exchange rather than having the user select the refresh interval (ie 30 mins, 1 hour) the system is a ALWAYS ON connection which constantly checks your e-mail. As oppose to G-Mail..... they as get PUSHED to your phone by google's servers every time you get an e-mail as oppose to an ALWAYS ON system.
There is a lot of hush going on about the facebook app draining the battery... hence I addressed the widget/app parts..... as of now I think we should wait for an update to see how things change, it is a software bug.
Click to expand...
Click to collapse
Exchange uses Activesync, which pushes messages as well. The ongoing sync is for contacts and calendar items which if you do not make a lot of changes, change to off and sync then yourself manually.

markdurant said:
Exchange uses Activesync, which pushes messages as well. The ongoing sync is for contacts and calendar items which if you do not make a lot of changes, change to off and sync then yourself manually.
Click to expand...
Click to collapse
I had turned all Syncing off besides mail and it was still eating battery on push mode... just something to keep in mind for Activesync users who are experiencing abnormally low battery life

raqua said:
Actually, having GPS on consumes battery even when it is not used. And quite a lot. I have seen mayor battery boost after I started to turn it off when I do not use it. (on G1).
Click to expand...
Click to collapse
GPS ONLY uses battery when it is in use. You will know this because the icon will appear when it is being used. It doesn't use battery just being on. WiFi and Bluetooth do because they have to constantly "keep their eyes open" for things like networks and bluetooth devices that want to pair/communicate.
ddgarcia05 said:
I also noticed shop savvy was taking up alot of my battery drain. Looks like it was running in the background non stop. I uninstalled it.
Click to expand...
Click to collapse
I noticed this too on other Android phones but not on my G2. It would just show up in Battery Use even though I wasn't using it. If you want to see what is keeping your phone awake you can use the hidden Battery History menu. The "partial wake usage" is usually a big contributor for bad standby times. You could also try changing from WCDMA Preferred to GSM Auto PRL. This helps some people.

khaosxiii said:
Location - Wireless networks=OFF
By turning this off won't you in turn be turning off assisted GPS?
IE - the GPS will not have an approximate location and begin locating from there but will rather have to cycle much further to dial in and take much longer to calculate your position?
Just asking - if you haven't noticed a difference then that's cool.
Click to expand...
Click to collapse
A lot of people have been reporting that this feature as of NOW updates every hour, regardless of which services/apps need it. If you ask me, I haven't noticed any significant amount in the time it takes to get GPS location having that feature turned OFF. If you do a cold start (i.e. restart your phone) than the GPS will take a couple of more seconds to initialize for the first time use. However, from than on everytime you use the GPS it shouldn't take more than 10 seconds to acquire your position.

hah2110 said:
I noticed this too on other Android phones but not on my G2. It would just show up in Battery Use even though I wasn't using it. If you want to see what is keeping your phone awake you can use the hidden Battery History menu. The "partial wake usage" is usually a big contributor for bad standby times. You could also try changing from WCDMA Preferred to GSM Auto PRL. This helps some people.
Click to expand...
Click to collapse
Could you explain more about this settings, and how would one get to this setting.... If it helps save the battery I'll add it to the list

funkadesi said:
Could you explain more about this settings, and how would one get to this setting.... If it helps save the battery I'll add it to the list
Click to expand...
Click to collapse
Sure... At the phone menu (must be the native dialer), dial *#*#4636#*#*. Then chose Battery History and you can use the drop downs to control what you view. If you go to "phone information", you can change the preferred network type. Here you can force 3g only, etc. WCDMA Preferred fights to get a 3G signal and keep it. GSM Auto PRL uses a downloaded list to choose whether to use 3G or 2G, thereby saving battery in certain cases.

juice defender very slow?

I have the paid version of juicedefender. For the most part I love it. But I have one question. For all apps that I have 3G enabled for (gmail, maps, etc), it takes a good 10 seconds or more between turning on the app, and getting any indicator that 3G is being enabled.
Does everyone else have this same issue?
Ie, I launch gmail, hit refresh, and wait - and nothing happens. Then I wonder what's wrong - about 10-15 seconds later, the 3G icon pops up in status bar, then the refresh starts.

I think most people have juicedefender enable data on the screen turning on, or the screen unlocking. I do notice there is a good 4-5 second delay after I turn on the screen. This is to be expected, at least to a certain extent.

Setting jd to enable data on unlock is probably the best compromise of convenience and battery life. I use that or toggle off data completely depending on where I'm at, using the jd widget to switch between modes.
Sent from my SPH-D700 using XDA App

Thanks. I'll give that a shot and see if it doesn't kill my battery.
Since killing the DRM processes, my battery life has been tremendous! so maybe now I can afford to have 3G on with the screen.

icemanjs4 said:
Thanks. I'll give that a shot and see if it doesn't kill my battery.
Since killing the DRM processes, my battery life has been tremendous! so maybe now I can afford to have 3G on with the screen.
Click to expand...
Click to collapse
If you're going to be doing alot of usage not requiring data you can always use the handy jd widget to toggle data off. The widget has 3 modes:
On - user controlled
On - jd controlled
Off - user off
Sent from my SPH-D700 using XDA App

Had the same issue, but its alot more noticeable on this phone than my hero because this phone unlocks and is ready to go so much faster. I ended up getying rid of it because I stream slacker for ~9 hours a day and it just got in the way otherwise.
Sent from my SPH-D700 using XDA App

We need a stickied battery improvement thread

I am happy to make one.
Sent from my SPH-D700 using XDA App

My battery tips
1. Latitude : If you are logged in, it will update your location every few minutes. This will make a phone that should be on a very low power state, re-enable lots of things that suck power. (5hrs)
2. Home screen weather clocks : Just change the update interval to something more like every 3 hours and it won't kill your battery as quick. Make sure you don't have it use GPS for location. If you don't mind, set the location to be static. (1hr)
3. Chat programs that don't rely on push. If the program needs to keep your data connection alive, it will kill your battery.(1-5hrs)
4. Anything that will update automatically. The craigslist app for example will poll the site for changes, waking the connection and the processor each time.(1-5hrs)
5. Bluetooth. : I know it isn't an app, but if you aren't using it, don't have it on. It takes enough power to eat a few hours of battery life. Pretty major. (3hrs)
6. Leave 4G on. : This might not work for everyone, but when 4G is asleep, it doesn't seem to suck juice the same way 3G does. My EVO dies quick on 4G, my Epic battery lasts longer on 4G. (as long as you are in a 4G area). (3hrs)
Disable these things and you should get battery life that you hear others bragging about.

"Latitude" on my phone and others I've seen, does not update that often and really only constantly updates is when you have maps open. My wife and I both run latitude and have not noticed anymore of a battery drain than not running it.

sdrawkcab25 said:
"Latitude" on my phone and others I've seen, does not update that often and really only constantly updates is when you have maps open. My wife and I both run latitude and have not noticed anymore of a battery drain than not running it.
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Click to collapse
Mine updates every few minutes on WM and Android. Turn on your history and you will see it updates hundreds of times a day. After my froyo update, I couldn't make it through the day. You might have location set to wifi or wireless, I probably should do that too, but I'd rather keep it active.

I subscribed to it.
http://forum.xda-developers.com/showthread.php?t=884684

i thought the whole idea of push was that it doesn't use data cause its a server side push instead of the phone polling at a set schedule

roghaj said:
Mine updates every few minutes on WM and Android. Turn on your history and you will see it updates hundreds of times a day. After my froyo update, I couldn't make it through the day. You might have location set to wifi or wireless, I probably should do that too, but I'd rather keep it active.
Click to expand...
Click to collapse
Weird, I have history on and the setting to update automatically, and still only updates only once every few hours on it's own. Maybe mine is "broken", but glad it is then. I'm on an htc Incredible.

If you are getting excessive drain while on wifi, check for unusual traffic on your network as the problem is probably not your phone and something else polling your device keeping it awake.
http://forum.xda-developers.com/showthread.php?t=1087278
For me, the problem was HP's wireless printer software on one of my laptops.

I'm wondering if one of these 2 is a big sleep preventer:
1. "Background Data" (I used to think all you had to do was disable "Auto Sync" but when I uncheck "Background Data" I get a popup saying something about how I will save battery power if I agree to disable)
2. "Use Wireless Networks" (even if GPS is off).
I usually have been getting good results after unchecking a combo or both of these and sometimes I even have to reboot to get back to normal Epic sleep.