I'm not sure if anyone else knows this, but I read somewhere that if you change the wifi sleep policy to never, it actually SAVES battery.
I thought this was insane, but if you think about it it actually makes sense. It stops your phone from the constant switch to Edge and 3G... which in return saves your battery.
Usually I can lose up to 5% in 30 minutes by not even using my phone.
Now that I have a constant wifi connection I have only lost 2% in an hour and a half.
Assuming you're connected to a wifi network, yes.
Otherwise, no.
JCopernicus said:
Assuming you're connected to a wifi network, yes.
Otherwise, no.
Click to expand...
Click to collapse
I'm not sure how that works when you're not connected to a network and the phone goes into sleep...
I use Y5 which uses cell towers to remember where I am able to receive wifi. If I leave a remembered spot it will turn off the radio for me. When I come back it will automatically turn it back on and reconnect.
lance713 said:
I'm not sure if anyone else knows this, but I read somewhere that if you change the wifi sleep policy to never, it actually SAVES battery.
I thought this was insane, but if you think about it it actually makes sense. It stops your phone from the constant switch to Edge and 3G... which in return saves your battery.
Usually I can lose up to 5% in 30 minutes by not even using my phone.
Now that I have a constant wifi connection I have only lost 2% in an hour and a half.
Click to expand...
Click to collapse
Hmmmm
Wouldn't the phone continue to have it's cellular Edge/3g connection going while you have the WiFi on?
Whenever I have WiFi on in addition to 3g I always see, under battery usage, wifi at about 2-3% and Cellular signal at 5-6%
Seem's like when you have WiFi on as well as Data that both are draining the battery...
The phone turns off 3g radio when you have a data connection.
JCopernicus said:
The phone turns off 3g radio when you have a data connection.
Click to expand...
Click to collapse
Are you sure about that? I'm connected to WiFi on my phone and the Status screen under About Phone still stays UMTS rather than EDGE.
PrawnPoBoy said:
Are you sure about that? I'm connected to WiFi on my phone and the Status screen under About Phone still stays UMTS rather than EDGE.
Click to expand...
Click to collapse
UMTS is just the 3g network, that doesnt mean data. the 3G network is used for voice calls too.
so yes, when the phone is connected to wifi, the cellular data connection is terminated. always been like this.
and yes i've seen a huge battery increase with wifi set to NEVER sleep policy.
It will stop hop between 2G/3G even if you're not using the data. You'd have to force it to 2G only and then enable wifi to take advantage of this the most.
I second those findings. When at home, use no sleep policy, and going out - turn off wifi manually. Works very well.
My "always on while sleep" doesn't work.. it opt's out anyway..
Edit: Installed an app called Wifi Fixer. And my connection hold up now while sleeping. nice....!!!
Where do I find this sleep-setting?
Not looking for a flame because I'm still learning.
if you have juicedender and keep the wifi setting on what it is when your phone sleeps the phone will turn off wifi and juicedefender will turn of 2g/3g correct? If this is true then you can save double the battery by installing defender (free); right?
bberry said:
Where do I find this sleep-setting?
Click to expand...
Click to collapse
Go into Wi-Fi settings.. Hit Options (the capacitive button you know...)
Ha! I've had my N1 for two months now and didn't realize there was more Wifi options if you click on the options button to the left of the home button. I wish they would add some sort of indicator that there's more to do if you click on that button. I've run into this soooo many times. It's kind of nice, though, because I keep finding goodies even months after buying the phone lol.
Yes it's often a mystery - it would be cool if it was possible for the capacitive menu button be lit only when there are additional options.
Sindroid said:
My "always on while sleep" doesn't work.. it opt's out anyway..
Edit: Installed an app called Wifi Fixer. And my connection hold up now while sleeping. nice....!!!
Click to expand...
Click to collapse
..will try that Wifi Fixer too
kbeeveer46 said:
Ha! I've had my N1 for two months now and didn't realize there was more Wifi options if you click on the options button to the left of the home button. I wish they would add some sort of indicator that there's more to do if you click on that button. I've run into this soooo many times. It's kind of nice, though, because I keep finding goodies even months after buying the phone lol.
Click to expand...
Click to collapse
First rule of Android power-users:
Press Menu... Everywhere
Paul22000 said:
First rule of Android power-users:
Press Menu... Everywhere
Click to expand...
Click to collapse
I tried that on a hottie standing in line for coffee. I got slapped.
I've tried setting the wifi sleep policy on my phone (T-Mobile MyTouch Slide) to "never sleep," but I'm not sure it's helping. When I turn on wifi for a little while (say, an hour or two) and then look at the battery usage screen I see that wifi uses a pretty significant chunk of the battery, maybe 10% or so, higher if I leave it on for longer. This is even if I'm not using the connection much, sometimes I'll turn it on to do a little light browsing and then put the phone away for an hour and then check to see how much power the wifi connection ate. Today I turned on wifi for maybe 10 minutes to download a couple app updates and turned it off right afterward. The phone has been only off the charger for 3 hours, but wifi accounts for 8% of the battery drain (the rest is idle: 16%, standby: 31%, and display: 45%).
On the other hand if I stick to 3G data I don't feel like I see as much of a hit on the battery (though it's harder to tell how much of "standby" is going to 3G data).
I understand in theory that connecting to a wifi access point within the building should require less power than connecting to a cell tower a mile away, but I also disable "always-on mobile data" so hopefully I'm not maintaining a 3G data connection all the time either.
Those of you who leave the wifi connection on all the time and are reporting better battery life than with 3G data, how much of your battery do you see going to wifi in the battery usage screen?
Well for me when I leave WiFi set to never, I lost 11% in 12 hours. On 3g I lose way more in that same period.
Related
How can I set my phone up so that When I am at home or the office it uses WiFi, and if I am aay it automaticly switches over to medianet? I hate having to constantly switch the network.
if you have wifi on and leave wifi coverage it will always log onto edge if you have it set to gprs always on.
but then you dont want to have wifi on all the time; unless you want your phone to be dead in like 3 hours. When you are out of wifi coverage the wifi radio is still searching for connections so the battery still drains fast.
zeuzinn said:
but then you dont want to have wifi on all the time; unless you want your phone to be dead in like 3 hours. When you are out of wifi coverage the wifi radio is still searching for connections so the battery still drains fast.
Click to expand...
Click to collapse
You're exaggerating a bit -- I leave WiFi and BT on and go 3-4 days between charges. In my experience it's the phone function that drains the battery fastest.
3waygeek said:
zeuzinn said:
but then you dont want to have wifi on all the time; unless you want your phone to be dead in like 3 hours. When you are out of wifi coverage the wifi radio is still searching for connections so the battery still drains fast.
Click to expand...
Click to collapse
You're exaggerating a bit -- I leave WiFi and BT on and go 3-4 days between charges. In my experience it's the phone function that drains the battery fastest.
Click to expand...
Click to collapse
Yeah, you are actually right... It just hit me that , unlike GPRS, wifi gets completely disabled when the device is on stand-by and gets back when its woken up.
That being said, I still support the idea that the battery would be drained in about 3-5 hours if the phone didn't go into sleep mode.
Hi,
I just got the focus couple days ago and have a question:
when you use the WIFI connection (at my house for example), does the phone turn off the 3G? does it use both? how does it work?
3G still remains on/connected providing your carrier and phone support 3G. when wifi is on and connected, it takes over 3G connection for data till you disconnect wifi again.
powersquad said:
3G still remains on/connected providing your carrier and phone support 3G. when wifi is on and connected, it takes over 3G connection for data till you disconnect wifi again.
Click to expand...
Click to collapse
Yes and no.
There's a bit of a design flaw in WP7 that is catching many users by surprise.
What you're saying is correct when you're using the phone. WiFi takes precedence over 3G for data.
But, and this is the surprise, when the phone goes to sleep (mine's set to the maximum of 5 min), it turns the WiFi off, meaning 3G takes over.
Many people learn this the hard way, because they'll start some large download and leave the phone alone. At some point, the phone goes to sleep (the display turns off, basically), which turns off the WiFi, and now your download is switched to complete via 3G. Many people are wondering on the various forums why they leave their phone (say overnight) thinking it's on WiFi, and wake up to a surprise data usage number on 3G.
If your wireless router has a status screen to monitor live connections (I use DD-WRT, which does), you can see this behavior for yourself.
It gets better! If you're a "normal" user who plugs in your WP7 to charge up the battery overnight, you'll notice you can't turn the phone off. So, without taking any specific action, you have absolutely positively no choice but to burn 3G usage during the time period that the phone's plugged in, but not in actual use.
The workaround, if you're really tight on data usage, is to turn off your cell/3G manually, or switch to Airplane Mode, or stick your phone in a lead-lined box (okay, maybe not lead, but you get the point).
Brad.
I am frustrated with this too. I wish there was a simple toggle switch, application , that would simply turn one of them on and the other off without going into settings everytime.
This is very interesting (and a little worrying). How can I check my data usage from the phone?
Data usage
Dial *3282# and hit call
A text will come in with usage.
I make a habit of turning 3G off unless I need it, just to avoid 3G being used over WiFi or apps auto updating.
bpsmicro said:
Yes and no.
There's a bit of a design flaw in WP7 that is catching many users by surprise.
What you're saying is correct when you're using the phone. WiFi takes precedence over 3G for data.
But, and this is the surprise, when the phone goes to sleep (mine's set to the maximum of 5 min), it turns the WiFi off, meaning 3G takes over.
Many people learn this the hard way, because they'll start some large download and leave the phone alone. At some point, the phone goes to sleep (the display turns off, basically), which turns off the WiFi, and now your download is switched to complete via 3G. Many people are wondering on the various forums why they leave their phone (say overnight) thinking it's on WiFi, and wake up to a surprise data usage number on 3G.
If your wireless router has a status screen to monitor live connections (I use DD-WRT, which does), you can see this behavior for yourself.
It gets better! If you're a "normal" user who plugs in your WP7 to charge up the battery overnight, you'll notice you can't turn the phone off. So, without taking any specific action, you have absolutely positively no choice but to burn 3G usage during the time period that the phone's plugged in, but not in actual use.
The workaround, if you're really tight on data usage, is to turn off your cell/3G manually, or switch to Airplane Mode, or stick your phone in a lead-lined box (okay, maybe not lead, but you get the point).
Brad.
Click to expand...
Click to collapse
correction:: When you plug in your phone for charging the wifi stays ON even during standby, so 3G data is not used during this period.
@pigue
"Dial *3282# and hit call
A text will come in with usage."
That didn't work for me... I'm in Canada on Rogers. Is the number different up north?
im having problem with my 3g data.brought in my phone to my service provider.they couldnt fix my data because they were looking for the proxy and port.but they can only the apn settings.pls need help.im paying for data and im not able to use it.
BenJG said:
@pigue
"Dial *3282# and hit call
A text will come in with usage."
That didn't work for me... I'm in Canada on Rogers. Is the number different up north?
Click to expand...
Click to collapse
Sorry this is for AT&T....
cbebop7 said:
correction:: When you plug in your phone for charging the wifi stays ON even during standby, so 3G data is not used during this period.
Click to expand...
Click to collapse
Thanks for that clarification. I spent a bit of time yesterday monitoring my WiFi connections and it appears as though you're quite correct, WiFi does stay on the phone's when plugged in. That's a tolerable workaround.
Pity none of this is actually documented, and we're all forced to figure this out for ourselves.
Brad.
bpsmicro said:
Thanks for that clarification. I spent a bit of time yesterday monitoring my WiFi connections and it appears as though you're quite correct, WiFi does stay on the phone's when plugged in. That's a tolerable workaround.
Pity none of this is actually documented, and we're all forced to figure this out for ourselves.
Brad.
Click to expand...
Click to collapse
I read about this in the documentation for the wifi sync somewhere. Can't remember if was M$ documentation, though.
My friend told me that staying connected to a wifi connection is less demanding powerwise. I always thought keeping the wifi attenna on would drain more power because ur running to attenndas at once. Anyone care to chime in with their opinions?
I have no real data to back this up, but it does seem like my battery lasts longer with wifi on. I believe the 3G radio shuts off when there is an active wifi connection but i could be wrong.
lilgrass71 said:
My friend told me that staying connected to a wifi connection is less demanding powerwise. I always thought keeping the wifi attenna on would drain more power because ur running to attenndas at once. Anyone care to chime in with their opinions?
Click to expand...
Click to collapse
Correct for the most part. So long as you're connected to a stable WiFi signal, of course.
3G data constantly looks for available HA's (Home Agents) to deliver the best upload/download speed, and, depending on how much you use your data, the constant on/off of using 3G causes the fast battery drain.
Modifying your HA in data settings will reduce the amount of ping attempts 3G will make, but you will still get the battery drain every time you use data. Keep in mind that sending SMS or making phone calls don't use 3G, but if you don't have 3G turned off, it will always switch to 1X during these processes. If you're a heavy texter, rule of thumb is to leave 3G off during the day unless you are going to be using it consistently for a period of time. This will save you a great amount of battery life.
Wifi is MUCH easier on battery for me.
^ Shift Faced
jesusice said:
Wifi is MUCH easier on battery for me.
^ Shift Faced
Click to expand...
Click to collapse
I totally agree. At home my battery stays between 90-100% for a full 24 hours before it starts to drop on my Moment using the ubuntroid 4.2 ROM. If I pull my phone off the charger in the morning for work I'm at 70% by the time I get back home.
- I discovered that if you are online the battery is not drained a lot during sleeping mode (about 1% for 8 hours)
but if your are CONNECTED to your wifi spot and not have internet connection then the drain will increase by 20 times... (20% for 8 hours)
I use at home a wifi hotspot require to be logged in to can go online, and I forgot to log in last time.... then I saw my battery goes drained faster than normal.
go to sleep : 75%, wake up after 8 hours 55%... I was very surprise, I thougth that was the kernel (I ve just updated from 1.11 to 1.2 thor) but after checking I see that wasn't the kernel but just the fact that I forgot to login to the hotspot..
So
- if you let wifi on always, be sure the internet works properly else your battery will be drain
- if you cut the wifi before sleeping well nothing more have to be done
the fact also is the battery is not drained by let the wifi on always, if you are not browsing or downloading, the drain is really really low...
.....what?
officetally said:
.....what?
Click to expand...
Click to collapse
What is there not to understand? I thought it was clear enough.......
i just did 48 hrs on with 4-5 of use...wifi is set to go off when tabket does. (After a min) ...so I guess this is not good?
Iconianoob11 said:
i just did 48 hrs on with 4-5 of use...wifi is set to go off when tabket does. (After a min) ...so I guess this is not good?
Click to expand...
Click to collapse
you can set the wifi behavior in settings, mine is set to never goes off.
no ryhme or reason
sanaell said:
you can set the wifi behavior in settings, mine is set to never goes off.
Click to expand...
Click to collapse
Mine is set go off when screen times out. I do not think that always happens. Sometimes I hear notifcations even though the screen is off and wifi isset to go off when the screen does Other times i see a significant baterry drain after a few hours sleep
so never sleep is better than off with screen? Just trying to make sure I understand
never off but connected to wifi with internet connection = low battery drain
never off but connected to wifi without internet connection = high drain 20 times higher than previous
for me doesn't see big matter between sleep off wifi and sleep on wifi.
sanaell said:
- I discovered that if you are online the battery is not drained a lot during sleeping mode (about 1% for 8 hours)
but if your are CONNECTED to your wifi spot and not have internet connection then the drain will increase by 20 times... (20% for 8 hours)
I use at home a wifi hotspot require to be logged in to can go online, and I forgot to log in last time.... then I saw my battery goes drained faster than normal.
go to sleep : 75%, wake up after 8 hours 55%... I was very surprise, I thougth that was the kernel (I ve just updated from 1.11 to 1.2 thor) but after checking I see that wasn't the kernel but just the fact that I forgot to login to the hotspot..
So
- if you let wifi on always, be sure the internet works properly else your battery will be drain
- if you cut the wifi before sleeping well nothing more have to be done
the fact also is the battery is not drained by let the wifi on always, if you are not browsing or downloading, the drain is really really low...
Click to expand...
Click to collapse
The above underlined is the equivalent to having cellular/data searching for a network...etc
ie. as with my Nexus One ( Android phone )
At my work, due to interference, I cannot received a cellular/data connection.... if I leave it on ( cellular/data )... it spent times searching & searching until it gets a signal....and if you have something that need syncing, it add to to drainage multiple times...therefore.... faster battery drain then if you do have a data connection. ( I usually have it on airplane mode where I know that I won't get a signal. )
I have tested this theory and proven it numerous times in the past while trying to make my battery last longer with my phone ... our A500 is the same when it comes to Android and battery lasting
You have a kinda weird HOME network setup ?
Most people set their HOME network with a key and get connected with the key & devices remember them... why bother with a login ?... I guess some people won't even trust their own network... LOL
Common in thailand to have a hotspot setup, since it's expensive to install internet private at home, require open a phone line, then pay a fee, then install the DSL line and pay another fee, and pay monthly fee... and also if I want change apartement that makes things much more easy... just leave and go, no need to think about closing line or else
I do not have internet inside my apartment... It's a shared hotspot provided for the whole building.
need to manage users and duration to bills the peoples.
If I had choices I will have my own private internet connection.
yeah from what i read your tab is searching for the network all night, that will drain your battery fast. As you said either login in or turn off wifi.
sanaell said:
Common in thailand to have a hotspot setup, since it's expensive to install internet private at home, require open a phone line, then pay a fee, then install the DSL line and pay another fee, and pay monthly fee... and also if I want change apartement that makes things much more easy... just leave and go, no need to think about closing line or else
I do not have internet inside my apartment... It's a shared hotspot provided for the whole building.
need to manage users and duration to bills the peoples.
If I had choices I will have my own private internet connection.
Click to expand...
Click to collapse
That explains things a lot more clearly. I don't think that's a particularly common setup outside of Thailand though, especially in the US and Europe. We tend to have our own internet connections so such logging on just isn't needed. I, for example, have a 50mbit always on cable connection with my own hotspot.
This tip is one that seems counter-intuitive, but you can save a lot of wear and tear on your Android phone's battery if you tell it to keep the Wifi radio turned on and connected while the phone is sleeping. Your phone needs a lot of juice to keep pinging those cell towers, and even more to transmit data to and from them. Wifi radios use much less power because of their design, and they don't have to keep searching for a better access point. It's the way cellular data communication was designed, and it's a necessary evil.
But what if you're spending all day (or all evening) in one place, connected to Wifi? If you tell your phone to shut off Wifi when idle, it bounces back to cellular data (be it 2G, 3G, or 4G) and starts sucking down the electrons again when the screen shuts off. That's no good, and easy to fix:
Open the advanced Wifi settings by pressing the menu button, then Settings, Wireless & networks, Wi-Fi settings, and tapping the menu button again. You'll have a choice to either Scan, or go Advanced -- go Advanced.
Tap the Wi-Fi sleep policy entry, and you'll get a pop up dialog with the 3 choices. Choose Never.
Now even when your phone goes into standby mode, you'll stay connected to Wifi and be able to get mail and messages without turning the cell radio back on and trouncing your battery life. And for the times when you're not in an area with a Wifi connection, just shut Wifi off, either through the menu or with a handy toggle widget. Your battery will thank you for it.
#Its only for those beginners who dont know about this setting...
dont you mean tick always, as if you tick never itll go back to using your dataplan instead of the wifi
Re: [Guide] Save Battery By Keeping Wi-fi Alive
I use to believe this but for some reason on my sgs3 wifi drains more battery I get more juice with wifi off.
Results may very due to your services supporting fast dormancy, etc.
Sent from my GT-I9300 using xda app-developers app
Re: [Guide] Save Battery By Keeping Wi-fi Alive
koolshubh said:
This tip is one that seems counter-intuitive, but you can save a lot of wear and tear on your Android phone's battery if you tell it to keep the Wifi radio turned on and connected while the phone is sleeping. Your phone needs a lot of juice to keep pinging those cell towers, and even more to transmit data to and from them. Wifi radios use much less power because of their design, and they don't have to keep searching for a better access point. It's the way cellular data communication was designed, and it's a necessary evil.
But what if you're spending all day (or all evening) in one place, connected to Wifi? If you tell your phone to shut off Wifi when idle, it bounces back to cellular data (be it 2G, 3G, or 4G) and starts sucking down the electrons again when the screen shuts off. That's no good, and easy to fix:
Open the advanced Wifi settings by pressing the menu button, then Settings, Wireless & networks, Wi-Fi settings, and tapping the menu button again. You'll have a choice to either Scan, or go Advanced -- go Advanced.
Tap the Wi-Fi sleep policy entry, and you'll get a pop up dialog with the 3 choices. Choose Never.
Now even when your phone goes into standby mode, you'll stay connected to Wifi and be able to get mail and messages without turning the cell radio back on and trouncing your battery life. And for the times when you're not in an area with a Wifi connection, just shut Wifi off, either through the menu or with a handy toggle widget. Your battery will thank you for it.
#Its only for those beginners who dont know about this setting...
Click to expand...
Click to collapse
You need to choose "Always", not "Never". If you choose "never", then it disconnect wifi as soon as display is turned off.
SlimJ87D said:
I use to believe this but for some reason on my sgs3 wifi drains more battery I get more juice with wifi off.
Click to expand...
Click to collapse
If you're moving out of wifi range, or in and out of wifi range, turning wifi off will use less power as associating with an AP has a high energy cost. But as the original poster says, if you're going to be sitting in one place all day e.g. at home or at the office where your phone will always be connected to an AP, leaving wifi on and always connected will use less power than 3G.
More details here:
http://people.cs.umass.edu/~arun/papers/TailEnder.pdf
I suppose it's not that surprising. I'm sure many of us, after buying a new phone, have left the old one sitting around at home without a SIM card but connected to wifi, still polling emails and everything. The battery lasts ages!
Re: [Guide] Save Battery By Keeping Wi-fi Alive
This might be irrelevant, but i red an article her in xda about modern mobiles battery long time ago.the article said that when wifi on or off has no significance effect on battery life (regardless of other sitting like carrier signal .....etc)
Sent from my GT-I9000 using Tapatalk 2
SlimJ87D said:
I use to believe this but for some reason on my sgs3 wifi drains more battery I get more juice with wifi off.
Results may very due to your services supporting fast dormancy, etc.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Apparently FD doesn't affect battery life that much (See here, second post). I get better battery life on wifi and I think that's still the case for the majority of people if they are within a wifi area.
I tried and with option "always" I have more battery drain, cca. 2%/h in idle/screen off/overnight. With old setup when Wi-Fi is off in case screen goes off, I have cca. 1.6%/h. So, it doesn't work for me. Thanks anyway.
What ive found is to turn your 3g to 2g, that will save a LOT of battery. I use 3g if im out and about where theres no wifi, if im at work i dont use my phone often so switch 3g to 2g. It still brings my notifications in time. And at night switch to 2g as well.
Re: [Guide] Save Battery By Keeping Wi-fi Alive
Raz88 said:
What ive found is to turn your 3g to 2g, that will save a LOT of battery. I use 3g if im out and about where theres no wifi, if im at work i dont use my phone often so switch 3g to 2g. It still brings my notifications in time. And at night switch to 2g as well.
Click to expand...
Click to collapse
But that's a no brainer! Of course battery life will last a lot longer on 2G! Your battery life will also last a lot longer if you have no data connectivity. The discussion here is between data and wifi.
Sent from my GT-I9300
Thanks good tip