WIFI and 3g - Focus General

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.
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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.
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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?
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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.
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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.
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Click to collapse
I read about this in the documentation for the wifi sync somewhere. Can't remember if was M$ documentation, though.

Related

WiFi connection ever ON (is it possible?)

Is there a trick for mantain the wifi connection always on?
Because if i switch off the phone i loose my connection and the p3600 use the gprs connection for recieve the mail in background.
Thank you
That would kill your batteries very quickly...
yegor said:
That would kill your batteries very quickly...
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Click to collapse
Yes it would. When I'm at home I plug in my Trinity into the charger, which makes it stay on. I have the phone set to stay on while charging. This way I can have my wifi connected continuously and save on my 3G data usage.
I think when in standby the phone doesn't connect to data, it wakes itself up does the email check etc., then goes back into standby according to your power standby settings.
I've noticed that when using Wififofum, it still detects new wifi access points even when it's in standby.I don't know if it's really in standby, but at least the screen is off and i need to press Power button to see what it has found.

Wifi vs 3G

Hi All,
Another question from the Sony Ericson X1 newbie
When you're in your home, do you leave your WAP/GPRS/3G on all the time? or would you connect to your wifi? Is there a way for it to determine which is the best to go to?
The reason I ask is because im sat in my room, trying to download a panel, but it keeps losing the 3G connection. With the wifi, it wouldn't do this.
Plus I set my emails to check every 10 minutes, so obviously it won't be able to do this if it can't get a connection properly.
Thanks,
I believe you just answered your own question.
BUT
Yes, but, the 3G connection stays alive when the phone is sleeping and mail can check.
I have found while experimenting over the past 2 days that leaving wifi connected (even with the allow sleep mode wifi change in the registry via Advance Config) STILL doesn't let it auto receive my mail.
I have been using the Xperia on and off all day without turning the wifi off once, and hadnt received any mail, only to pick up my iphone to find that the exact same mail account synced had already received 8 emails. (Also using wifi)
This so far is the only thing hugely disappointing me with the Xperia and I may end up buying a data plan to fix it.
Okay, thank you.
And is there any way to disconnect the 3G once the Auto Send/Receive has completed? I just don't want it to drain my battery in the middle of the night and then my alarm won't wake me up in the morning haha.
Yo
Amnesia180 said:
Okay, thank you.
And is there any way to disconnect the 3G once the Auto Send/Receive has completed? I just don't want it to drain my battery in the middle of the night and then my alarm won't wake me up in the morning haha.
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As far as i know, it should disconnect itself or atleast go into a low power "sleep mode" when the phone is asleep. I wouldn't worry about it draining the battery. But don't quote me on that because I don't have a data plan.
My GPRS stays on 24/7, at night I don't have any send or receive and I put the phone in sleep mode (tapping the power key).
Never seen the battery drop more than 10% (and remember the phone only gives 10% intevals, so in reality it could be just 1 or 2%)

Holy crap. Change wifi sleep policy to never. BIG INCREASE IN BATTERY

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.
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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.
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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.
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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.
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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?
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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.
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Click to collapse
First rule of Android power-users:
Press Menu... Everywhere
Paul22000 said:
First rule of Android power-users:
Press Menu... Everywhere
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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.

Does edge icon mean voice only connection?

I am trying to save battery life and force my phone to have only voice/sms/mms capabilities only. I have background data disabled, roaming disabled, 2G-only enabled, and fake APN. However there is still an EDGE icon and it periodically flashes the up/down arrow. Is it trying to poll for internet or is this just basic cell tower polling for voice calls?
Also, there is a method of disabling internet permanently through the testing screen, which requires entering a code to access. Is this method more complete than a fake APN and thus better for battery life? I am afraid to test it as I don't like messing with hidden menus and want to easily be able to revert back without having to remember a code.
And yes I am aware this is a smartphone, but I need it to be a light-weight featurephone for right now.
All I can add is that when I unlock (not carrier/sim unlock) the phone I can see the Edge icon with the arrows flashing for a sec or two before the WiFi goes out of sleeping mode. My NetCounter application doesn't pick up any data drawn during that time. So either it doesn't transfer any data with the Edge during that time or the application is not perfect.
I know that doesn't answer your question but it can give you hope that the icon _may_ not be reliable.
Edge icon means its running on 2.5g mode. Shouldn't bother you much. Install 3g watchdog and android and set it up. Have look at activaty. Only way to make sure
Sent from my Apple Newton 2100
I'm not worried about data usage since I don't have a data plan. I'm only concerned about battery life, because it seems to be polling EDGE. If 2G voice calls and 2G data polled the same time using the same line and disabling data wouldn't really make a difference for battery, that would be good. But I'm not really sure.
silverwolf0 said:
I'm not worried about data usage since I don't have a data plan. I'm only concerned about battery life, because it seems to be polling EDGE. If 2G voice calls and 2G data polled the same time using the same line and disabling data wouldn't really make a difference for battery, that would be good. But I'm not really sure.
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Click to collapse
Best battery life check: charge your phone up to 100% before going to sleep and unplug it, wake up and look at how much battery life you have left. It should be 98%+ if you didn't use it before going to sleep. This is even if you use it as an alarm clock and the screen is on for 3-10 minutes during your alarm/snooze/wake process.
Edge is a 2G network, the best way to test your device to see if it's doing anything is to open up an internet browser and see if you can get anything. If you can't open Google's homepage, your internet connection isn't being used and your standby battery life will be through the roof. This will also, in my experience, prevent apps from launching and causing partial wake issues and keep your phone idle time longer. I forgot my phone at home one weekend, came back home and lost like 8% of battery. I'd guess you are experiencing about the same if you can't get on the internet.

[ TIP ] Save Battery By Keeping Wi-fi Alive

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...
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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.
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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

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