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I was lurking over at the sprint hero board and came across an interesting thread. People are noticing an increase in battery life when the set the wifi settings for sleep to Never.
Seems like what is happening, as soon as the phone blanks out, WIFI is turned of and the phone is switched to EVDO mode. which drains battery. If your in a bad coverage area your battery drains even faster.
Some people are talking about a performance increase as well, but I think what they are seeing is the phone not having to cycle back to wifi everytime they touch the phone.
Treefallingquietly said:
I was lurking over at the sprint hero board and came across an interesting thread. People are noticing an increase in battery life when the set the wifi settings for sleep to Never.
Seems like what is happening, as soon as the phone blanks out, WIFI is turned of and the phone is switched to EVDO mode. which drains battery. If your in a bad coverage area your battery drains even faster.
Some people are talking about a performance increase as well, but I think what they are seeing is the phone not having to cycle back to wifi everytime they touch the phone.
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Interesting, but is this for those who always have wifi enabled (I never use it)? I'll try anything to get more from my battery since I can barely squeeze out about a day (18 hours) from my phone even with the sms workaround implemented.
I'm looking in the wifi settings and don't see any options for "wifi sleep".
katmandu421 said:
Interesting, but is this for those who always have wifi enabled (I never use it)? I'll try anything to get more from my battery since I can barely squeeze out about a day (18 hours) from my phone even with the sms workaround implemented.
I'm looking in the wifi settings and don't see any options for "wifi sleep".
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Here is the link: http://community.sprint.com/baw/thread/24324?tstart=0
Basically, when you are in an area that has spotty coverage, your battery will drain quicker because its always roaming and trying for service. I get this in the Texas Hill country. So if you have wifi and are in a bad location, whenever your wifi sleeps, it goes back to EV. I think just the nature of this connection is hard on the battery. hence using Wifi as much as possible.
Another option is to use APNdroid or something like it to disable the EVDO when you're not using it. Push notifications don't always come through that way or can be slow coming, but if you know your phone is just going to sit there you can conserve a lot of power this way. Turning off GPS, WiFi and EVDO I was able to squeeze out almost 3 days of usage when I was using the phone sparingly. If you're enabling those connections only when you need them, making it through the day should be no problem if you're not constantly using the device.
So, it seems the default policy for wifi on this device is never to disconnect itself to save power. The Vibrant defaulted to whenever the screen was off. That makes the default wifi policy between these two devices vastly different. In fact, there isn't even an option on this phone to disconnect from wifi when the screen is shut down. I wonder how this will affect battery life. I may think twice about enabling wifi.
The first thing I did after connecting it to my wifi was go to the wifi advanced settings and set the sleep policy to never. I'm glad it was already off by default. It shows that someone at HTC paid attention to that small detail and how it affected battery life. It greatly helps your battery life in my experience (with the Vibrant), since it's not constantly connecting and disconnecting from wifi which apparently uses more power.
Aspeds2989 said:
The first thing I did after connecting it to my wifi was go to the wifi advanced settings and set the sleep policy to never. I'm glad it was already off by default. It shows that someone at HTC paid attention to that small detail and how it affected battery life. It greatly helps your battery life in my experience (with the Vibrant), since it's not constantly connecting and disconnecting from wifi which apparently uses more power.
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Agree 100%.
Sent from my HTC Glacier using XDA App
Aspeds2989 said:
The first thing I did after connecting it to my wifi was go to the wifi advanced settings and set the sleep policy to never. I'm glad it was already off by default. It shows that someone at HTC paid attention to that small detail and how it affected battery life. It greatly helps your battery life in my experience (with the Vibrant), since it's not constantly connecting and disconnecting from wifi which apparently uses more power.
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Really? How would that *improve* battery life? I would have it to *detract* from battery life. If I'm at home basking in my wireless network, why would I rather have the connection permanent than to have it disconnected when the screen shuts off as it does by default with the Vibrant? If what you say is true, then setting the timeout from the 15 minutes timeout, as I have it now, to full time connection (never timeouts), will actually save on battery? To me, that flies in the face of reason, but then again, stranger things I've come across.
Just hoping for a reply to the above, and perhaps someone can explain why having wifi never time-out even when the screen is off can lead to better battery life?
think about it. having to connect and reconnect everytime you turn on your screen is bound to eat up. if your screen is off its not sucking in massive amounts of data so the battery drain is at a min
Lockeskidney said:
think about it. having to connect and reconnect everytime you turn on your screen is bound to eat up. if your screen is off its not sucking in massive amounts of data so the battery drain is at a min
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Well, it's certainly not intuitive, and I am thinking about it, hence the post. In order to maintain an active wifi connection, there has to be continual pinging back and forth even with no active data connections from the device. Now, we all know that there *is* a lot of data being exchanged when the screen is off - whether it be syncing accounts, retrieving news items, emails, etc. This would all be taking place over a wifi connection by default. It is also my understanding that using your wifi radio consumes more power than your UMTS radio does. However, I'm not entirely sure of that last point.
Isn't it far more intuitive to believe (whether factual or not) that having the wifi radio powered on unnecessarily while in your pocket would consume more power than having it turn off? Even the seasoned users over in the Vibrant forums all recommend setting the wifi to turn off when the screen shuts off, which is a setting not available on the MT4G.
I'd like to believe that how HTC sets the default wifi behavior conserves power, but it sort of flies in the face of reason. I'm also of the belief that the device is set by default the way it is so that callers who use Wifi Calling can always be reached while at home on their wifi network. But, having such a wifi connection setting is actually eating up your battery life if you don't need wifi calling.
Wifi used less power that edge/g3/4g. Having it constantly on wifi with improve your battery life just because when wifi is enabled it shuts off cellular data.
option94 said:
Wifi used less power that edge/g3/4g. Having it constantly on wifi with improve your battery life just because when wifi is enabled it shuts off cellular data.
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Ah, OK, well there you have it. Someone ought to tell those folks over the in the Vibrant forums then. Thanks...
floepie said:
Ah, OK, well there you have it. Someone ought to tell those folks over the in the Vibrant forums then. Thanks...
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I have. I have a vibrant. Ordered the mytouch last night.
Also, can't have WiFi sleeping... otherwise WiFi calling won't work...
Sent from my HTC Glacier using XDA App
So, it seems like the xoom wifi model looses its wifi connection after the screen is off for a few minutes; is there a setting that I can change to keep the wifi active all the time, or, is it a function of the built in battery savings modes?
thanks!
weird... I have not encountered this issue.... my xoom is binging all the time when sleeping notifiying me of emails and such.
is it a wifi only model, or a 3g/wifi?
thanks
I have a wifi only version and no problems with wifi
ok, I guess I need to hear from more wifi owners to know if mine has a problem, or its my router..Although I have a brand new cisco/linksys e4200, so it shouldnt be the router..
I have the wifi only model.
I just looked at the settings... go into the wifi settings click the disconnect policy, and make sure "never" is clicked.
thanks, that was the first thing I did..
i also downloaded Spare Parts from the market to see if that would help, but so far it doesnt seem to help at all..
wonder if I have a bad unit..
May I ask why you would never want it to disconnect when screen is off? You will get more battery not using data when data is not needed... I had to go in and do the opposite because I noticed my xoom was draining more than normal when screen is off. Went down five percent in 1 hour which is not good once changing it; it didnt budge when screen is off. just my two cents..
jland22 said:
May I ask why you would never want it to disconnect when screen is off? You will get more battery not using data when data is not needed... I had to go in and do the opposite because I noticed my xoom was draining more than normal when screen is off. Went down five percent in 1 hour which is not good once changing it; it didnt budge when screen is off. just my two cents..
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Well if u want data for updates and oush notifications you'll need wifi on. Mines on all the time even when screens off and my battery life is amazing.
If you're having lots of battery drain u might wanna check your "awake" time in battery usage and make sure you don't have a rogue app or widget keeping the Xoom awake while the screen is off. The CNN widget was doing this for me.
martonikaj said:
Well if u want data for updates and oush notifications you'll need wifi on. Mines on all the time even when screens off and my battery life is amazing.
If you're having lots of battery drain u might wanna check your "awake" time in battery usage and make sure you don't have a rogue app or widget keeping the Xoom awake while the screen is off. The CNN widget was doing this for me.
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Understood. Yea for some reason my awake time is matching my battery use time 100 percent however there is nothing that I can find causing it. Doesnt seem to be draining my battery at all however. I dont have a weather app or cnn app and my running services are just the google framework and core apps / maps ,goog voice. oh well.
It's called WIFI Sleep Policy. Set it to "never."
martonikaj said:
Well if u want data for updates and oush notifications you'll need wifi on. Mines on all the time even when screens off and my battery life is amazing.
If you're having lots of battery drain u might wanna check your "awake" time in battery usage and make sure you don't have a rogue app or widget keeping the Xoom awake while the screen is off. The CNN widget was doing this for me.
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my thoughts exactly..
battery usage is amazing for me, even with all the widgets I have running on it, which are at least 10 or so..
Easily getting over 12 hours of battery life, which is good, since you cant plug the damn thing in while its standing up..
The engineer who placed the power hole on the bottom should be shot...
wase4711 said:
my thoughts exactly..
battery usage is amazing for me, even with all the widgets I have running on it, which are at least 10 or so..
Easily getting over 12 hours of battery life, which is good, since you cant plug the damn thing in while its standing up..
The engineer who placed the power hole on the bottom should be shot...
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That's hardly a death sentence. Lol
Sent from my PC36100 using Tapatalk
If your connected to wifi and using it, are you gonna get better battery life VS being connected to either 3g or 4g/hspa+?
and Why if so?
Shoot im sorry, this shouldnt be in this forum. I thought I was in the general questions forums. MY bad people. Please move mods.
smashpunks said:
Shoot im sorry, this shouldnt be in this forum. I thought I was in the general questions forums. MY bad people. Please move mods.
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This is the General forum. To answer your question, Yes it would use less battery on WiFi. On a data connection the signal is not a constant and the phone is always looking for a stronger signal.
Thanks, thats what I thought. And ive noticed that connected to wifi my battery lasts a lot longer.
smashpunks said:
Thanks, thats what I thought. And ive noticed that connected to wifi my battery lasts a lot longer.
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yes. And 4g eats your battery.
When I am only using the phone for data, I use WiFi when available. I turn on airplane mode then activate WiFi.
I don't know about that... when I'm on wifi my battery drains like a mofo. Weapon 3.0 ICS theme faux 1.3 kernel.
On every ROM and Kernel I've tried, Wi-Fi uses much, much less battery than 4G. I haven't tried any of the toggles / battery saving apps though so I'm not sure what effect those might have.
NeKr0MAtiK said:
I don't know about that... when I'm on wifi my battery drains like a mofo. Weapon 3.0 ICS theme faux 1.3 kernel.
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Do you disable data when you use wifi?
buru898 said:
Do you disable data when you use wifi?
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He shouldn't have to. If he's draining faster on WiFi then something is screwy with his setup.
On stock, cyanogenmod 7.1, and cyanogenmod 7.1 with various other kernels I've experienced increased battery drain with wi-fi on and connected with the phone sitting at home the entire day. Turn off wi-fi and let it just use the data connection to T-Mobile and I get drastically increased battery times. I'm assuming those of you who get better battery with wi-fi on are in extremely bad signal areas. Also, if you're on cyanogenmod have you turned off the auto wi-fi disconnect when sleeping feature? If you haven't then your battery life when sleeping should be the same as that of wi-fi turned off.
Wi-fi should always be priority if your in range.
Well my personal experience has been that wi-fi eats up battery like crazy. Same thing happens to the other smartphone users I know around here so I was surprised to see that people get better battery times with wi-fi on. Are you guys completely turning off your cellular radio? I don't like the quality and slight delay of wi-fi calling so my cellular radio stays on when I have wi-fi on.
I don't usually notice much difference between wifi and 3g battery drain here (no 4G for tmo here).
As someone already posted, my drain is worst when 3g signal is poor, like when I'm at work and the metal building interferes with everything.
Have you tried checking logs while connected to wifi to see if maybe some app or service goes crazy?
Nothing fishy going on when wi-fi is on. I get about 10-14 hours on battery with wi-fi on and next to no use of the phone vs somewhere around 20+ hours with wi-fi off and similar extremely light use. I keep meaning to do some more standardized testing where I literally don't touch the phone but life gets in the way and I have to make/answer a call or txt or whatever so I can't nail down any hard numbers. Typical experience on a slow day for me is that if I forget my wi-fi is on, my battery will be somewhere in the 3-5% range when I'm getting ready for bed while if I hadn't left it on, I can go to sleep and wake up and it'll still be hanging in there.
GTWalling said:
This is the General forum. To answer your question, Yes it would use less battery on WiFi. On a data connection the signal is not a constant and the phone is always looking for a stronger signal.
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That's true, I've always believed that Wifi eats battery faster because someone(don't remember who) always told me that Wifi uses more battery because it processes data faster, but I always noticed that when I used 4g, it drains a lot faster.
I always blamed it on the ROM, but I can see that it's not the ROM's fault.
Anyone else experiencing this? Atrocious battery life post upgrade. Nothing odd running in background, program or processes. Rebooted phone. Started the day at 100% with moderate usage at best, I'm already down to 19%.
Battery life is relatively unchanged in mine after the mm update. Easily make it through the entire day with 50-60% battery life remaining. I disabled a whole bunch of the bloatware (and will be removing it entirely when I decide to root my phone) and battery life is wonderful.
shaels said:
Anyone else experiencing this? Atrocious battery life post upgrade. Nothing odd running in background, program or processes. Rebooted phone. Started the day at 100% with moderate usage at best, I'm already down to 19%.
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Mine has been fine, slightly better with doze/disabling packages. Do a back up through Smart Switch and try a factory reset. I do that every time I update.
I'm envious of your successes. I'll give it a bit to see if it stabilizes, if not I'll use SS and reset/restore.
shaels said:
I'm envious of your successes. I'll give it a bit to see if it stabilizes, if not I'll use SS and reset/restore.
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I will recommend "Package Disabler Pro" to disable bloatware. Costs but is worth the cash.
Mine went through on Thursday and so far battery appears ok.
I have noticed however the lighting is messed up all over. Play books night light feature is broken and dims it to unrecognizable levels. I have to go into the settings again when in the book and disable auto lighting and manually raise it. When back at the list of books screen, the brightness drops to nearly off again.
Also it seems the notifications when listening to music are much louder. I could listen to mp3s via poweramp while reading a book and get an SMS text and itd be a light little sound. this is playing louder than my music and very annoying.
My batter life was horrible after the upgrade. Here's what I did to fix it.
1) Wifi sleep policy - Changed that to "While Charging" (big difference noticed after that)
2) Fully charged phone then let it run down to 0 (must let it power itself off)
3) Wifi Scanning has been moved under Location setting. Go to Location -> Improve accuracy, make sure Wi-Fi scanning is off.
Batter life is awesome now.
jasong127 said:
My batter life was horrible after the upgrade. Here's what I did to fix it.
1) Wifi sleep policy - Changed that to "While Charging" (big difference noticed after that)
2) Fully charged phone then let it run down to 0 (must let it power itself off)
3) Wifi Scanning has been moved under Location setting. Go to Location -> Improve accuracy, make sure Wi-Fi scanning is off.
Batter life is awesome now.
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Click to collapse
1: Apps/sync will use mobile data as priority if this is done while waiting to connect to wifi. In turn, using even more battery if an app/sync wakes the phone switching between networks.
2: This is damaging to Li batteries. To extend the life of your battery, it is better to keep it topped above 80% and cool(not very common in real world applications). These aren't Ni batteries, long gone are the days of "memory discharging".
If you don't need notifications at night, use airplane mode. I miss Xposed, Autotasker, and Amplify(formerly Bounce)... Greenify is a good alt atm
Note: Sometimes even Play service updates will introduce bugs and or "retarded" policies that will destroy the battery, especially the "Now" systems. It can happen at the most random times as well and not at all most. Every now and then the fat man will get stuck in the tube.
All thoughtful replies. I don't have Location on ever, unless I'm using Waze, so that's a non-issue for me. Allowing WiFi to sleep when the phone is off, while I'm only connecting via WiFi, effectively makes my smartphone a dumb phone, until I wake it up, right? The fact that I need to start changing around "normal" settings on my phone, to lesser benefiting ones, to get back to the battery life I had before I installed MM is pretty silly. I've been hoping things would settle down, but they don't. I can try using SmartSwitch later to see if that helps.
Steamer86 said:
1: Apps/sync will use mobile data as priority if this is done while waiting to connect to wifi. In turn, using even more battery if an app/sync wakes the phone switching between networks.
2: This is damaging to Li batteries. To extend the life of your battery, it is better to keep it topped above 80% and cool(not very common in real world applications). These aren't Ni batteries, long gone are the days of "memory discharging".
If you don't need notifications at night, use airplane mode. I miss Xposed, Autotasker, and Amplify(formerly Bounce)... Greenify is a good alt atm
Note: Sometimes even Play service updates will introduce bugs and or "retarded" policies that will destroy the battery, especially the "Now" systems. It can happen at the most random times as well and not at all most. Every now and then the fat man will get stuck in the tube.
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Click to collapse
No, it will connect LTE and then switch to wifi. LTE use more battery life, the network switch uses a bit, then finally you are into wifi. If your phone wakelocks or alarms(location ping, play service ping, etc) it will use more battery than wifi always on. Personally, I've tested both to make sure a wifi wakelock bug hasn't been introduced as I do with every update and play service update(it does happen and it's horrible drain). I see more savings always on.
If you meant you disable mobile network, yes, dumb phone, text and call. Also, I disable mobile usually always as I piggyback off work cell at work, and always wifi at home. I only toggle mobile data when necessary.
jasong127 said:
My batter life was horrible after the upgrade. Here's what I did to fix it.
1) Wifi sleep policy - Changed that to "While Charging" (big difference noticed after that)
2) Fully charged phone then let it run down to 0 (must let it power itself off)
3) Wifi Scanning has been moved under Location setting. Go to Location -> Improve accuracy, make sure Wi-Fi scanning is off.
Batter life is awesome now.
Click to expand...
Click to collapse
I believe this is what most people encounter. Most dont have unlimited data and use WIFI always. I think by default, WIFI is set to always on, even when phone screen is off. WIFI will rape your battery. I did my own tests with wifi vs 4g and just by using my 4g all the time, battery quadrupled. Many argued that WIFI uses less battery, and i have the best of the best wifi router/modem/isp with 5ghz ac excellent coverage. Not the case for me. I have unlimited and just stick with that now. Battery life on MM has been great for me.
My battery life is 4x better. I couldn't be happier.
shaels said:
Anyone else experiencing this? Atrocious battery life post upgrade. Nothing odd running in background, program or processes. Rebooted phone. Started the day at 100% with moderate usage at best, I'm already down to 19%.
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Been on MM for about five days now and my battery blows, so much worse than what it was!
musicfreak190 said:
My battery life is 4x better. I couldn't be happier.
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Mine is exactly 4 times worse
Battery the same.
But I have to tap the screen harder to chose app.
Going to factory reset and start clean, been a while.
Sent from my Nexus 7 using XDA-Developers mobile app
Has Verizon released any new updates to patch the issues with Marsh Mellow update
utsc said:
Has Verizon released any new updates to patch the issues with Marsh Mellow update
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Not that I know of.
Though they JUST released Marshmallow. Verizon is probably still patting themselves on the back even though they released several months late. What I'm waiting for is a miraculous root.
I never use my phone the same amount every day, so it's hard to say exactly what kind of battery life I get, but I have noticed that it has improved. I would usually be near 15% by 10pm after coming off charger at 6am. Now I float around 25% at 10pm. So it seems to be better, even if only slightly so.
I see a minimal improvement, but I was doing what I could without root prior to sleep unnecessary crap.
Weird, when thye MM updated happened, up until the last two days, I was getting much better battery life under MM. But the past few days my battery life has declined dramatically to the point that I am not getting through a day of minimal use. Screen only 2%, Android OS consuming 76%.
I just fiddled with settings (Changed Wifi sleep to While Charging; Turned off wifi scanning). I am going to also try a reboot to see if that helps. I swear it started just about the time I started looking at Nexus 6p replacements).
Update, rebooting, and removing a few more useless apps and battery life has returned.