Welcome to the Android Central Forums Create Your Account or Ask a Question Answers in 5 minutes - no registration required!
Page 1 of 2 12 LastLast
Results 1 to 25 of 46
Like Tree4Likes
  1. Thread Author  Thread Author    #1  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default DO NOT USE "Best Wi-Fi performance"!

    This is an extraction of the very important information from my thread on the Evo LTE. ( DO NOT USE "Best Wi-Fi performance"! ) I believe this might also apply to the USA One X. Please post your findings, either way.....

    WARNING: DO NOT TURN ON THE "Best Wi-Fi performance" setting!!! It will DESTROY your battery life by consuming tons of CPU and keeping the CPU awake all the time, regardless of if you are using the phone or not. This has nothing do to with other settings such as "Keep Wi-Fi on during sleep" (which I have set to "Always" with no problem other than it doesn't keep it connected). I have tested this several times now, and have confirmation from numerous other users.

    With the setting on, you will notice a battery drain of 200 to 300% faster. Under power-> battery use you will see unusually high "Android OS" percents. When clicking on that, you will see high "CPU total" and very, very high "Keep awake" times..... in fact, the "Keep awake" time will almost mirror your on-battery time.

    After searching high and low, I can find no definitive explanation of exactly what that "Best Wi-Fi performance" setting really does, anyway. The word "performance" is meaningless- could be bus speed, chip speed, negotiated speed, battery impact, awake times, connect times, transmit power levels.... just about anything. Some users (and later HTC in a phone call to me) claim the option really does extend WiFi range. Hopefully HTC will fix this or at least disable the option if it cannot be fixed.

    It has also been reported to HTC as a problem (for the Evo LTE), who claims it is "expected" behavior but recommend it is only used temporarily, for short times when you need a boost in WiFi range. If you find this same behavior on the One X, do share it below. And also report it to HTC here: HTC Smartphones and Tablets - Support for HTC Cell Phones and Tablets
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
    Thanked by 3:
  2. #2  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    MEH!

    I was using Best WIFI performance for weeks and never noticed any battery savings after turning it off. It only makes a difference at extreme edge of the wifi coverage area.


    I think this issue is overblown.
  3. Thread Author  Thread Author    #3  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by icebike View Post
    MEH! I was using Best WIFI performance for weeks and never noticed any battery savings after turning it off. It only makes a difference at extreme edge of the wifi coverage area.

    I think this issue is overblown.
    I think you were not monitoring your battery correctly. I have DOZENS of people verify that the phone sucks through 200 to 300% more battery with that setting on. And you have seen it yourself in the Evo LTE thread.

    The issue is not overblown.
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
  4. #4  
    Kevin O'Quinn's Avatar
    AC Team Emeritus

    Posts
    9,047 Posts
    Global Posts
    9,256 Global Posts
    ROM
    Stock

    Default

    It does say "may consume more power" so I'm not sure this can really be classified as a problem.

    They can't say how much more, because that varies too much.

    Sent from my HTC One X using Android Central Forums
  5. #5  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by crxssi View Post
    I think you were not monitoring your battery correctly. I have DOZENS of people verify that the phone sucks through 200 to 300% more battery with that setting on. And you have seen it yourself in the Evo LTE thread.

    The issue is not overblown.

    Why don't you tell us EXACTLY how to measure our battery usage correctly.
    Exactly, step by step, which apps to use, everything.
  6. Thread Author  Thread Author    #6  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by Kevin O'Quinn View Post
    It does say "may consume more power" so I'm not sure this can really be classified as a problem.

    They can't say how much more, because that varies too much.
    * "may consume more power" also means "may not consume more power". And yet, in every case, if the option is turned on, it uses 200 to 300% more power. If this seemingly broken behavior really is normal (see below) then at least the menu option should be reworded to something like "warning: uses considerable additional battery, use sparingly."

    * And with such weak wording, it also implies it would use only a little more power. Most people would expect something like 2%, 10%, something like that.

    * This option was available on the Evo 3D and other HTC phones (and I think even other brands of phones, but I don't have confirmation of that). None of them showed such insane battery usage.

    * None of the battery usage is reported under WiFi- but under AndroidOS and evident by the phone being forced "Keep awake". This also tends to indicate something is wrong. Especially since being kept "awake" really has nothing to do with WiFi "performance".

    Here is my analogy: someone gets shot in the knee five times with a gun, then is given a note note that says "may cause discomfort".

    DO NOT USE "Best Wi-Fi performance"!
    Attached Thumbnails Attached Thumbnails DO NOT USE "Best Wi-Fi performance"!-keepawake.jpg  
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
  7. Thread Author  Thread Author    #7  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by icebike View Post
    Why don't you tell us EXACTLY how to measure our battery usage correctly.
    You are the only person that has said the option doesn't cause extreme battery drain; but you are also the only feedback I have gotten from the One X side. I am reporting this about the Evo LTE and assuming it will affect the Evo One X the same way since they use identical chipsets and nearly identical software.

    I have been thanked profusely on the Evo LTE forum for finding this issue and making it known- saving people tons of time trying to figure out why their battery is "crappy" compared to everyone else. But on this forum I get told "it is overblown" and "it is not a problem"! I would prefer that some additional people TEST the option and offer feedback so we know if it really is a problem on the One X, also.

    It really might not affect the One X at all... or cause more reasonable 2% or 10% drain, in which case that is great.
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
    Thanked by:
    tohio 
  8. #8  
    Kevin O'Quinn's Avatar
    AC Team Emeritus

    Posts
    9,047 Posts
    Global Posts
    9,256 Global Posts
    ROM
    Stock

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    All I said was that there was a warning by the setting, so the fact that it would cause higher battery drain shouldn't be a surprise.

    I don't NEED to use it, because I get good wifi signal, so I'm not going to turn it on.

    I'm pretty sure that all it does is send more juice to the wifi radio, giving it more tx/rx capability. There aren't really any other tricks to increase wifi performance other than that (unless they are talking about speeds and not range, in which case it might be different, but probably not).

    I'm not saying this isn't a big deal (because some people just wouldn't investigate enough to figure out that's the setting causing the drain), but it's not a smoking gun that says HTC screwed something up.
    Kevin F.I.M.T.K. O'Quinn Esq.
  9. #9  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by crxssi View Post
    You are the only person that has said the option doesn't cause extreme battery drain; but you are also the only feedback I have gotten from the One X side. .
    So, still no information on how we should "properly" measure battery drain?

    Shucks, I was really looking forward to doing some exacting measurements.
  10. Thread Author  Thread Author    #10  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by Kevin O'Quinn View Post
    I'm not saying this isn't a big deal (because some people just wouldn't investigate enough to figure out that's the setting causing the drain),
    That is the biggest problem- when someone innocently sets the option, along with installing apps and changing a bunch of other things and then notices a MAJOR battery issue and can't figure out what went wrong. Or they set it on day one and didn't realize that 12 hours of battery life with moderate use is not "normal" for this device.

    but it's not a smoking gun that says HTC screwed something up.
    True, that would be memory management/multitasking
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
  11. #11  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Thanks for your helpful post. However, I have not had any problem with Android OS power draw with that "Best wifi" setting on. My Android OS is running about 3-5%. What has been taking 40% of my battery is Maps. I have made sure that I have force closed Maps, and discarded the Maps card in Recent Apps. I do not have a traffic app installed, and GPS is turned off. I still am blowing through battery of late due to Maps. Does anyone else have this issue?
  12. Thread Author  Thread Author    #12  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by port6805 View Post
    Thanks for your helpful post. However, I have not had any problem with Android OS power draw with that "Best wifi" setting on. My Android OS is running about 3-5%. What has been taking 40% of my battery is Maps.
    It would be really fascinating if this problem does NOT occur on the USA One X. (Or are you using an International One X?... there is a huge difference).
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
  13. #13  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    I have the AT&T branded HOX and definitely have Wifi issues.

    My wifi connection drops for about 10-20 secs every 2 minutes or so at home and at the office -- and this can happen right next to the access point. I've used catlog to examine logging, and before each disconnect, I see the following three messages:
    ------
    06-18 00:07:59.869 D/Tethering(415): [isWifi] getHotspotEnabled: false
    06-18 00:07:59.869 D/Tethering(415): [isWifi] getHotspotEnabled: false
    06-18 00:07:59.869 D/Tethering(415): [isWifi] getHotspotEnabled: false
    -------
    and then the connection resets (I'm not using tethering).

    This problem does go away if I select the "Best Wifi" setting -- but this drains my battery quite fast. When "Best Wifi" is selected, I can see that "wifi_pwr_active_mod" has been set in the logs. Using System Panel to monitor processes, I can also see that a system process named "tpd" begins to run constantly, never allowing the CPU usage to drop below 10%.
    wellard likes this.
  14. #14  

    Default

    Actually the messages you quoted are not germane to the problem.

    Also remember that android is Linux, and in Linux logging is not absolutely sequential and lower priority tasks might take a while to get their logging done.

    Your disconnect was triggered prior to this logging.

    Sent from my HOX
  15. #15  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Thanks for the tip; while there may or may not be a causal relationship from the messages above to the disconnect, they certainly seem to be correlated. The only time I've seen those messages has been during the connection reset after poring over multiple log files. Do you know what causes them messages above to get dumped to the log?
  16. #16  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    I am using the USA version from AT&T.

    I think i found my problem: In the Sense weather app settings, i disabled the "My current location," and the phone held 100% over night.
  17. #17  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    I started having the problem with "maps" consuming massive amounts of battery starting about 4 weeks prior to the ICS update. I can make it go away by disabling GPS. What seems to be happening is that some piece of software updated and is checking your fine (GPS) location quite often rather than using your coarse location. The GPS power seems to be reported as "Maps".

    I suspect it is facebook, as I can make it somewhat better by opening the FB app, going into their settings, and turning off "Messenger location services". I haven't tried uninstalling updates on it to see for sure.

    This problem with "maps" draining a lot of power when GPS is enabled has persisted for me through the ICS update, so it's not likely to be an OS problem. It's a bad app using fine location service rather than coarse.
  18. #18  

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Well, I, for one, noticed this exact issue today (AT&T One X). I had turned on the "Best" performance and began to watch the battery fall over the next 2 hours. Turned it off and my battery history immediately leveled off. A pretty dramatic effect in my case (although I did not quantify it).
  19. Thread Author  Thread Author    #19  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by myrddincox View Post
    Well, I, for one, noticed this exact issue today (AT&T One X). I had turned on the "Best" performance and began to watch the battery fall over the next 2 hours. Turned it off and my battery history immediately leveled off. A pretty dramatic effect in my case (although I did not quantify it).
    It is so dramatic, it is certainly "broken behavior". The phone needs a warning sticker on it:

    "WARNING: DO NOT USE THE 'BEST PERFORMANCE' WIFI MODE OR YOUR BATTERY LIFE WILL BE CUT BY 50 To 75% AND PRETTY MUCH FOR NOTHING"

    But it sounds like HTC is in denial about it, just like they are with "multitasking". They would rather people turn it on thinking it will help with something, then mysteriously develop severe battery issues, not know why, and then badmouth HTC products to everyone because battery life sucks.
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
  20. #20  
    pounder001's Avatar

    Posts
    387 Posts
    Global Posts
    879 Global Posts
    ROM
    Stock

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    My .02
    1X AT&T version stock - I've been following this thread and personally with "Best Wi-Fi Performance" off I have not noticed any significant change in battery performance/Certainly not a 50 to 75% difference.
  21. Thread Author  Thread Author    #21  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by pounder001 View Post
    My .02
    1X AT&T version stock - I've been following this thread and personally with "Best Wi-Fi Performance" off I have not noticed any significant change in battery performance/Certainly not a 50 to 75% difference.
    Certainly does on the Evo LTE (S4; many confirmations). And others confirm on the S4 One X.
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
  22. #22  

    Default

    Quote Originally Posted by crxssi View Post
    They would rather people turn it on thinking it will help with something, then mysteriously develop severe battery issues, not know why, and then badmouth HTC products to everyone because battery life sucks.
    What.

    You are calling everyone's attention to a problem some persons may be having. I don't really think HTC's master plan is to get everyone to bad mouth them. Shooting yourself in the foot is never a good idea, especially if your arm is already missing (the company having financial problems).

    Now Faster & Smoother!
  23. Thread Author  Thread Author    #23  
    crxssi's Avatar
    Linux: The power beneath

    Posts
    2,550 Posts
    Global Posts
    2,869 Global Posts

    Default Re: DO NOT USE "Best Wi-Fi performance"!

    Quote Originally Posted by LesMiserables View Post
    I don't really think HTC's master plan is to get everyone to bad mouth them. Shooting yourself in the foot is never a good idea, especially if your arm is already missing (the company having financial problems).

    Now Faster & Smoother!
    Well, that is what it seems like, anyway. They are aware of the "problem" and yet have done nothing to mitigate it. And it would be VERY easy to mitigate it, even if it is not solved- with a proper warning in the description. So it seems like they are happy to accept more support calls and upset people.
    Click "Thanks" and/or "Like" button on posts where someone helped you or you liked the posting. Nexus 5 (T-Mobile), Moto360, Nexus 10, Evo LTE, Evo 3D, Evo 4G
  24. #24  

    Default

    Have had my phone for 3 months now and I have used best WiFi performance off and on. While I was rooted on 4.0.3 and had no issues. Unrooted and went up to 4.0.4 and still no issues. I make sure my apps are never consuming background data or anything. I feel like that is the culprit to most problems. I have noticed some apps like facebook will stay running in the background even if you task kill it, until you log out.

    More or less I feel it could be the user to some degree as well.
  25. #25  

    Default

    Quote Originally Posted by crxssi View Post
    Well, that is what it seems like, anyway. They are aware of the "problem" and yet have done nothing to mitigate it. And it would be VERY easy to mitigate it, even if it is not solved- with a proper warning in the description. So it seems like they are happy to accept more support calls and upset people.
    Come on. Stop being ridiculous.
    You want them to push out an update WORLD WIDE to change one line of text?

    As others have stated, most people do NOT see a huge difference in battery utilization with best performance on. Just a few users who in all likelihood have some other apps misbehaving.

    Sent from my HOX
Page 1 of 2 12 LastLast

Posting Permissions