Possible Battery Fix from HTCSupport


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  1. eieio

    eieio Well-Known Member

    Last Updated: Jun 09, 2010


    Battery performance depends on many factors, including network configuration, signal strength, the temperature of the environment in which you operate your phone, the features and/or settings you select and use, items attached to connecting ports, and your usage patterns for voice, data and other programs.

    There are several differences between other phones and your new HTC EVO™ 4G that can impact your battery life:

    • HTC EVO has more radios to power (3G, 4G, Bluetooth, WiFi, GPS)
    • HTC EVO has a larger screen than most typical feature phones
    • HTC EVO has more capabilities than most typical feature phones
      • Management of multiple email accounts and syncing
      • WiFi access point
      • WiFi Router capability
      • 4G data
      • GPS
      • Access to several 3rd party applications through the Market
      • Applications and Processes running in the background
    Because of all these new wonderful capabilities and features, it is up to you to manage your battery life experience. Here's how!


    Multiple radios
    The multiple radios use battery life even when you are not using them. To improve battery life, turn off your Bluetooth, GPS, 4G, WiFi and WiFi hotspot if you are not using them.

    Preloaded widgets are available for your Home screen to conveniently monitor use of radios:

    • Power Control Widget – allows you to see radios that are ON and OFF
      • Widget > Power Control
    • Individual Widgets – available for Airplane Mode, Bluetooth, GPS, Mobile Network, Wi-Fi, 4G, Hotspot
      • Widget > Settings and select what you want to monitor
    • Running Services Widget – can help you identify services that are running that you no longer need that could be ended to save battery life
      • Shortcut > Settings > Running Services Widget


    Live Wallpaper and backlight settings
    Live Wallpaper uses significantly more battery than standard wallpapers when your screen is ON

    • Ambient Light Sensor – controls backlight brightness based on your ambient lighting condition
      • Settings > Sound and Display > Brightness
    • Manual Control – You can use your Power Control Widget to easily adjust your backlight intensity with a simple touch.


    Email Applications Settings

    • Bottom line, email synchronization settings can have significant impact to battery life and the ideal settings are going to vary by person. Try different configurations that achieve the best compromise between convenience and battery life.
    • Generally, less frequent email syncing equals better battery life
    • Shorter polling frequencies (5 minute, 10 minute, 15 minute) can actually be worse for your battery life than As Items Arrive, especially if you do not have high volumes of email.
    • Email settings allow you to set up peak and off-peak hours for email sync on each email account
      • Pop Account – Mail > Menu > More > Settings > Send & Receive > Set Download Frequency
      • Exchange Account – Mail > Menu > More > Settings > Send & Receive > Schedule
      • Manual Sync – allows you to receive emails only when you choose to; this can be optimal for battery life if you don't necessarily need emails as quickly as they arrive. Sync by selecting Menu > Refresh


    Preloaded Applications
    There are several preloaded applications which update based on frequency settings:

    • Stocks
    • Weather
    • News
    • Peep
    • Flickr
    • Facebook
    These applications have a settings menu that typically can be accessed by using the Menu button while you are in the application. In the settings menu there is an item called Update Schedule
    (Menu > Settings > Update Schedule; this may slightly vary from App to App).

    In general, the less frequently you allow these applications to update, the better your battery life. If you find there are applications you don't use at all, for the best battery life experience, configure the application to either not sync at all or to sync at the lowest frequency. You can also end the application or service by going to the Running Services Widget mentioned above.


    Google Talk
    When you sign up for the Google Market or Gmail with your Gmail account information, you are also signed in to the Google Talk instant messaging application. The Talk application tracks the presence of your Google Talk contacts in order to let you know who is available to instant message. Each presence change uses power, even if you do not have the Talk application open.

    If you do not use Talk on your device or do not mind if it is only operating when you actually have the application open, then you can eliminate this extra battery consumption:

    1. Press Menu then tap All apps > Talk > Menu > More > Settings
    2. Uncheck the automatically sign in box.
    3. Make sure you exit the application by going to Menu > More > and selecting Sign Out
    4. In order to again receive Instant Messages through the Talk application, all you'll need to do is open the Talk application again and it will automatically sign you in.
    Note: Make sure you always exit the application by selecting Sign Out to reduce battery consumption. Exiting the application by use of the back or home keys will not sign you out and battery life will not be improved.


    4G
    The 4G radio should only be turned on when the improved network speed is required for an application, such as YouTube, Web Browsing or Sprint Mobile Hotspot. When not in use, it's important to use the built-in 4G widget to turn the 4G radio OFF.

    If you have your 4G radio ON, but are no longer in 4G coverage, then your device will be scanning in an attempt to re-acquire the 4G network. Your battery can be significantly drained by scanning, so if you know you will be out of 4G coverage for an extended period of time or if you are not acquiring a 4G signal as indicated in the task bar, it is important to turn your 4G radio OFF.

    Even when in 4G markets, particularly when mobile, you may be going in and out of 4G coverage. If you notice that you do not have a 4G signal at any point in time, turning off the 4G radio will save you significant battery life. Simply turn it back on to check for 4G coverage when you are back in 4G coverage.

    To check for the latest 4G coverage in your area, click here.


    3rd-Party Applications
    Be especially cautious with all 3rd-party applications that you download from the Android Market. Often times these applications have not been designed with battery life in mind. Many of these applications significantly impact your battery life and quite often they remain running even when you exit the application. It's important for you to understand the behavior of all the applications you download and to:

    • Learn how to use the running services application or other 3rd-party task managers to identify applications that are still running even when not in use and to end applications that are still running but no longer needed
    • Know how to close the application so that it does not continue running
    • If the applications synchronize data, make sure you optimize the synchronization settings for improved battery life


    Link: Support - Article
    CDMA trick:
    Download an app by the name Network
    Run it to see if its showing GSM or CDMA auto (PRL)
    It should be showing CDMA auto (PRL) Refer to the images below (original link)
    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    Also need to calibrate the battery...
    With the phone in the on position.

    Fully charge the battery with the phone on... (until the led turns green.)

    Once the led turns green, unplug the charger until the led goes off.

    After the led goes off, plug the charger back in. When the led turns green , power off the phone.

    now.... with the phone fully powered off...

    1. Unplug the charger.

    2. Wait until led goes off.

    3. Plug charger back in until the led turns green. When it turns green, unplug the charger again and go to step 1.

    4. repeat steps 1 and 3, 10 times. This may take anywhere from 30 seconds to 30 mins per cycle. Typically only about 1 minute. though.

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    RootNow, KathyL, ctna3313 and 97 others like this.
  2. eieio

    eieio Well-Known Member

    Google talk is definitely causing an issue with battery life

    Install Battery Status Pro to get a better reading on battery life from the market..

    System Panel Lite will also give you some good info on whats going on with the phone
    Wbarger likes this.
  3. Sketchr

    Sketchr VIP Member VIP Member

    Good info.
  4. Palomino

    Palomino Well-Known Member

    Questi on about "Running Services Widget " I dont want to turn off anything I shouldn't I dont recognize some of these things. Can you elaborate on what they are?

    I.e. ObexService, Htc Dm Service etc....
  5. mcbtrain929

    mcbtrain929 Well-Known Member

    i never use google talk, so i'm glad you posted this. i unchecked the auto sign in and signed out. thanks!
  6. eieio

    eieio Well-Known Member

    I am testing the battery and signal issue now with one of my techs. I will post back in a few hours..
    SprintFun likes this.
  7. evotitans

    evotitans Well-Known Member

    Im newer to android but definitely need help with the email.....Unless im not seeing it, how do I set it all my email accounts to "as they arrive"?? I dont need it checked regularly as my emails come in at all different times.Thanks in advance.
  8. eieio

    eieio Well-Known Member


    If you did not install it don't turn it off yet.. Leave them running..
  9. eieio

    eieio Well-Known Member

    Click on menu,

    click on settings,

    click on account and sync,

    un check Back ground data for now
  10. SeauxCrazy

    SeauxCrazy Well-Known Member

    Did NOT know about the google talk thing. I've never used it, so thanks for telling me to turn it off :)
  11. evotitans

    evotitans Well-Known Member

    I have that done....but is there not an option in email to set it "as it arrives"?

    Sorry I'm just still used to the Pre.
  12. clambert1273

    clambert1273 Well-Known Member

    i love you more than I did yesterday :p great post E!!!
    eieio likes this.
  13. cyberelex

    cyberelex Member

    If people are really concerned about battery life, they should definitely take a hard look at the overclock widget. I can easily go 2 days without charge with my regular use.
  14. vitalangerment

    vitalangerment New Member

    I found this guide last night and disabled google talk right away. Im now running at 16 hours unplugged and still have 50% battery!!!!!!!!!!!!!!!! :)
  15. eieio

    eieio Well-Known Member

    We are noticing Qik and Fring are doing the same thing as Google talk.. If your not using those two programs make sure to exit out of the application before you close them out.
    dsrow and Periphery like this.
  16. eieio

    eieio Well-Known Member

    We are testing the battery, going to condition it. Charge and discharge it to see how many charges it takes for it to meet the state hours of use..

    The signal bars 3g,wifi and wimax on some of the units are also not registering properly..
    MzChiChi likes this.
  17. aliveon2legs

    aliveon2legs Well-Known Member

    I thought conditioning didn't have an affect on lithium ion batteries.

    :confused:
  18. dylan88

    dylan88 Well-Known Member

    i dont understand why anyone is having bad battery life. i go all day and never go under 20%
  19. horadin

    horadin Well-Known Member


    Same here, I want it to be "as it arrives." Is this possible with this phone? Also concerning turning background data off, some items like the app market require it to be on. I visit the market enough that I don't want to turn it off and on every time I visit it. Is it a huge impact if I leave background services on and auto sync on and only have my gmail account set to sync? That is really the only item I want to sync along with my att.net email account and the only way I can get those emails in any reasonable fashion is to set the download time to less than an hour. I need to get those emails as they come in.

    I know I am nitpicking here, but I want this phone to be perfect for me. I love customization.

    Thanks for the other tips, especially the google talk one. That has been bugging me for a while seeing it run in the background.


    EDIT: One question concerning system panel. the inactive (cached) apps that are listing on the main screen. Do those take up any resources in that state? They don't appear to to me, but I just want to be sure. Still trying to figure this app out. I need a guide for it lol.
  20. eieio

    eieio Well-Known Member


    Yes and no.. Batteries sometimes have a memory effect, life expectancy, estimated usage time, and will loose effectiveness overtime..

    They will also improve after a few cycles of use, so if it is rated for x amount of time a few charges should tell whether they are living up to that claim
  21. clambert1273

    clambert1273 Well-Known Member

    sticky this? I know everyone hates them but this could really help with the issues people have been having.. :)
  22. twospirits

    twospirits AF's janitor Moderator

    Outstanding post.

    Keep us updated on your progress.

    btw you have pm. :D

    TS
    yankeesrock13 likes this.
  23. MisterEd

    MisterEd Well-Known Member

    It doesn't, but the myth continues. For every "technical" article that says it does there are others that say it doesn't. Also, on the iPhone a full discharge then recharge would calibrate the battery meter (NOT condition the battery) but I've seen nothing to state that this phone has the same requirement.
  24. aliveon2legs

    aliveon2legs Well-Known Member

    I would love to see a list of HTC/Google applications that need to continue running. I'm certain I'm killing things that I shouldn't with ATK. I'm probably also leaving a couple of things running that don't need to be.
  25. Putty

    Putty Well-Known Member

    This!

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