Before I start I want to make this clear
Yes, my wifi policy is on "never" and I have pressed menu>save rather than just exiting out.
[Q] When my screen shuts off, after around 10-20 minutes my wifi disconnects (i can tell by checking router status on my comptuer to see attached devices) and when I turn on my phone and unlock it will go from 3g > wifi right away. The reason I want wifi on constantly is because the wifi radio uses less power than the 3g radio.
Now I'm aware that some roms have an option to turn off radio for 3g/wifi when not in use and will turn them on when the system needs to update/sync. However, my wifi is set to "never" sleep and there is no "always enable mobile data" option on my rom. I'm wondering why it will disconnect my wifi when my policy is set to never.
ROM:
MIUI 0.12.11 (0.12.3 fixed the wifi disconnect problem, but 0.12.11 is a newer rom)
bcblend 2.6.32.25 cfs stable (SBC custom)
If I turn wifi on at my house and leave a little later, will it automatically switch back to 3g until wifi is available again? And so on throughout the day?
Sent from my SPH-D700 using XDA App
Depends on your Wifi sleep policy.
If set to never sleep, then as long as you stay in wifi range it will stay connected even if the screen is off. If you venture out of wifi range it will jump to 3G and continuously search for a new wifi network at whatever the default TouchWiz scan interval is.
If set to sleep when screen is off, then it will swap back to 3G when the phone screen is off and therefore do your syncing over 3G while the screen is off. When you turn the screen back on, wifi will reconnect if still within range.
If set to never sleep when plugged in, then it will remain on wifi as long as you're within range and have the phone plugged in. Otherwise it will revert to 3G if no longer plugged in and the screen is off. (Never used this choice, so I could be off a bit.)
Pretty sure I covered the cases. I've tried the screen off (TouchWiz default) choice and never (current setting) choice. I find the plugged in choice pointless for me.
i checked the option "always" Keep Wi-Fi on during sleep. Does this mean if its "off" that it will use 3g/4g instead? Also does wifi kill battery faster than the networks data
If you have it set to turn off WiFi during sleep, then when you turn off the screen, WiFi turns off and 3G turns on. When you turn the screen back on, 3G turns off and WiFi turns on.
WiFi generally uses less power than constantly being connected to 3G.
Setting WiFi to sleep when the screen is off often hurts battery life with normal use because it takes more power to keep turning radios on and off (over and over again) than it does to just leave them on.
Now, there are 3 different modes for the Wifi suspension control:
- Never: This option never turn off the wifi connection. So, is better when you are connected to a wifi, but is worse when you are not, because the phone is always searching for connection.
- When it´s not charging: This option turns off the wifi when you turn off the screen, if the phone is not charging, so, is basically like the next option if the phone is not charging, and the first option if the phone is charging.
- Always: This option turn off the wifi always when you turn off the screen. So, is better when you are not connected to a wifi, because the phone isn´t draining battery searching for wifi. But it is worse when you are in a known wifi zone, because the phone is using the data instead the wifi when the screen is off, which drains more battery and waste data of your mobile monthly data.
Neglecting the option of turning wifi on/off manually thorugh the widget, and not using 3rd party apps like juicedefender, I thing the most intelligent and battery saver option depends on your life. So there isn´t a good option for all the people and for all days. For example, I thing the best option for me in the working days is 'Always', because I doesn´t have wifi in my working place, and I spend 10 hours a day on it, so, when I am working, the phone is in my pocket without searching for wifi, but, in the weekend, the best option for me is 'Never', because I spend a lot of time on my house. Finally, for a person who stays the most time of his day in a wifi zone, the best option is 'Never'.
Ok, now I ask, it could be an option that could be the best for all the people? I think the answer is YES:
I think if could be possible to have a mix of 'Never' and 'Always'. I explain, imagine the wifi is suspended at this moment, so you are on mobile data, and you are in your house, for example, and turn on the screen to view the weather. When you turn on the screen, the wifi awakes and connect to your home´s wifi connecion and you view the weather. Now you turn off the screen, BUT, THIS IS THE DIFFERENCE whith the 'Always' option, the wifi DOESN´T turns off, because it is connected at this moment. So, all the time you are at home, since the first screen´s turn on, the phone is connected to the wifi, saving mobile data, and battery, because the wifi drains less battery. Now, you leave your home, and, when the phone lost the wifi signal, turns the wifi off, so, when you are in a not known wifi zone (like the street), the wifi suspends itself for saving battery of wifi searching. The wifi only will search for a known wifi when the screen is on (like now with the 'Always' option) and, if it isn´t connected to a wifi when you turn off the screen, the wifi goes to suspension mode. Now you enter to your home again, with the phone in your pocket, with the screen off, so the phone won´t connect to your home wifi until you turn on the screen, and at this moment, your phone will always be connected to your home wifi until you leave your home again.
I think that is a good idea, and I guess why google doesn´t include something like this in android, it could be the best option for all people in all the situations.
What do you thing about the idea?
I like the idea and I would love to see it implemented! Whenever wifi signal drops out, don't search for it until screen is on.. Would be brilliant!
Sent from my Galaxy Nexus using xda premium
I am pretty sure we can configure a Tasker profile for something like that!
Pat123 said:
I am pretty sure we can configure a Tasker profile for something like that!
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Probably, but the ideal case would be the option integrated into de system
up
Sounds like a good idea
but for now i use Y5 app
I like the idea, I think its very logical. I fall into the "always around WiFi" group of people though and the "Wifi sleep>Never" options suits me well, If I ever am not in my usual places, I have a wifi toggle on my notif bar for that. One thing I do miss though is the app "WiFi Status", its not compatable with either ICS or the SGN, not sure what the problem is, so I cant use it.
When I turn my Verizon G4 on the Wifi initially connects, then it shuts off. I have to go into the quick settings every time and turn on Wifi. Is this a common problem? Am I missing something?