In order to receive real time Google Voice phone calls, I need to maintain an active internet connection. Everything I've read suggests that Wi-Fi is the most power efficient way to do this. However, my idle power consumption when using Wi-Fi is 2% per hour, vs 0.8% per hour on 2g (0.4%/hr when mobile data is off). Does anyone else have similar results, or is there something wrong with my set up?
Related
As the subject asks, why does it drain the phone so much?
On my nokia symbian phone, it is connected to my asterisk box 24/7 over wifi and will last for days.
My galaxy nexus will drain out in hours if connected via wifi to my asterisk box.
The SIP qualifys are every 60 seconds.
Has anyone been able to get decent battery life for incoming SIP on ICS?
A somewhat related question I have; does anyone know of an app that will enable incoming SIP only when on wireless?
Thanks
It is because either the app or the build prop on the phone has the wifi scan rate up high. That means it needs to have a stable and solid connection so scanning for the wifi source more regularly ensures it doesn't drop a call or miss a message or what ever.
You can do one of a few things. You can freeze the app using Titanium backup and then unfreeze it when you need to use it and or you can drop the wifi scan rate from what it is now to a higher number i.e. 20 = 20 seconds (thats intervals between scans) and 180 is a large interval between scans. Above 180 and your starting to run the risk of having a call drop out on you if you are not on a solid wifi connection.
I am looking into a way of either modifying the default prop or possibly a script into adjusting the wifi scan rate to enable users to turn the scan rate down when not engaged in a wifi call and then turn it back up if they wish to (i.e. whilst on a wifi call or in a area of poor signal strength).
Can someone clear up what it means for the battery when both Wifi and 3g are enabled at the same time but only one is connected? So when I pull down my status bar (on Gingerbread) both are lit up. Depending on where I am, only one will be connected. What does it mean (battery wise) for a constant on Wifi connection to have 3g data enabled at the same time, and more importantly what does it mean to have 3g enabled and wifi enabled at the same time yet set to sleep/never? If I toggle wifi when the screen goes on via a battery saver, is that causing more battery drain constantly turning the wifi on and off than having the wifi kept alive (still sounds like this would not save the battery from the name but that's what I read!) Surely if there are only a few hotspots I connect to, it seems that using a location based wifi manager to turn it off when traveling makes sense. But when at a location, even on battery, is it best to just leave the wifi on constantly or would toggling with screen off save more energy?
Toggling it would increase battery life.
Sent from my GT-I9100 using XDA
Can anyone let me meaning of enabled/disabled fast dormancy..Actually what use this fast dormancy and its workout???
There are literally dozens of threads about this but it may be hard to get the needed information since many clueless people spread misinformation about fd.
First of, fd has something to do with data network and is only relevant in 3G (including HSPA) networks.
2G (Gprs, Edge) do not have such a feature.
3G network use a very high frequency which directly means that they need more power per second than 2G but also have a higher throughput rate, making it's power/work ratio lower (=better) than 2G.
However there is an issue with this feature: even when not actually in usage it drains your battery far too quickly.
Now, noone might care if you were to tranfer data non-stop but mobile phones have a history of idling 99% of their life.
One might say "hey let's go back to 2G when there is little to no activity" but unfortunately that won't work since 3g and 2g (in fact all generations) are incompatible to each other which causes a brief interruption in connectivity and closes all open connections.
As a result the network engineers decided to opt for a technique they called fd and which basically turns off 3G.
Usually when a phone connects to a 3g network it has to run through a long, complicated and time-consuming handshake process in which it is attributed, amongst others, the IP adress. These details are all discarded when the connection is lost or cleanly disconnected.
(Note: changing antenna is not considered a lost connection but uses a special soft- or hard-failover protocol)
So if the phone was to just turn off the 3g it would not work but there needs to be a consentual agreement with the network antenna to keep the data in store and reserve the resources attributed with the phone.
Now we can turn 3g off and save battery, knowing that we can revive the connection anytime we havo to send data.
(Naturally if we keep the connction offline for some time the network will just assume we lost data connectivity and free the resources anyway)
However what about receiving data (most notably Google C2DM long-polling)?
To receive data we have to turn the 3g network on again (wake up from fd) and request any pending packets the network temporarely delayed for us. If data is present, the phone completely wakes up from fd, otherwise it will go straight back to fd.
The interval between 2 polls is provider-dependant and is roughly 5 to 30 seconds of sleep time.
In a nutshell
-fd delays incoming data by up to poll-interval seconds
-if the interval is too low, fd will not save power
- if the networ does not support fd, the battery drains faster thao with fd disabled
- fd usually saves a lot of battery
-fd causes a lag on the first outgoing byte of a transmission
Sent from my GT-I9300 using xda premium
d4fseeker said:
There are literally dozens of threads about this but it may be hard to get the needed information since many clueless people spread misinformation about fd.
First of, fd has something to do with data network and is only relevant in 3G (including HSPA) networks.
2G (Gprs, Edge) do not have such a feature.
3G network use a very high frequency which directly means that they need more power per second than 2G but also have a higher throughput rate, making it's power/work ratio lower (=better) than 2G.
However there is an issue with this feature: even when not actually in usage it drains your battery far too quickly.
Now, noone might care if you were to tranfer data non-stop but mobile phones have a history of idling 99% of their life.
One might say "hey let's go back to 2G when there is little to no activity" but unfortunately that won't work since 3g and 2g (in fact all generations) are incompatible to each other which causes a brief interruption in connectivity and closes all open connections.
As a result the network engineers decided to opt for a technique they called fd and which basically turns off 3G.
Usually when a phone connects to a 3g network it has to run through a long, complicated and time-consuming handshake process in which it is attributed, amongst others, the IP adress. These details are all discarded when the connection is lost or cleanly disconnected.
(Note: changing antenna is not considered a lost connection but uses a special soft- or hard-failover protocol)
So if the phone was to just turn off the 3g it would not work but there needs to be a consentual agreement with the network antenna to keep the data in store and reserve the resources attributed with the phone.
Now we can turn 3g off and save battery, knowing that we can revive the connection anytime we havo to send data.
(Naturally if we keep the connction offline for some time the network will just assume we lost data connectivity and free the resources anyway)
However what about receiving data (most notably Google C2DM long-polling)?
To receive data we have to turn the 3g network on again (wake up from fd) and request any pending packets the network temporarely delayed for us. If data is present, the phone completely wakes up from fd, otherwise it will go straight back to fd.
The interval between 2 polls is provider-dependant and is roughly 5 to 30 seconds of sleep time.
In a nutshell
-fd delays incoming data by up to poll-interval seconds
-if the interval is too low, fd will not save power
- if the networ does not support fd, the battery drains faster thao with fd disabled
- fd usually saves a lot of battery
-fd causes a lag on the first outgoing byte of a transmission
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
This was really helpful.
Thank you.
here goes a click on the Thanks button.
Since I always tried to get the most batterylife out of my android phones, I would always set my device up, so that wifi would turn off automatically when in standby.
Now a friend of mine, who also got the S6, told me, that with the S6 I should set the wifi, so that it never turns off, not even when the phone gets to standby. His argument is, that when I'm constantly at home or at work (with wifi connections available) the wifi would use less battery power, than the 3G or 4G connection.
Also he sent me this:
http double point //www dot androidcentral dot com/android-101-save-battery-keeping-wifi-alive
(cant post the link ._.)
Is there any truth to this? Should I really put the wifi sleep policy on "never"?
Any opinions?
This is a two-fold question that requires two answers. You are both half right. Wi-Fi should be disabled when there's no hotspot nearby. Otherwise, your device is wasting battery seeking for a connection. On the other hand, if you're already connected to a recognizable Wi-Fi hotspot, Wi-Fi should be on even while the device is locked. It would have a battery-adverse effect if your device has to re-enable Wi-Fi each time it sends out beacons for email, facebook, twitter polling. Nothing preserves more battery than enable Wi-Fi and mobile data only when those sources are available. You can use one of those automatic Wi-Fi/LTE enablers found in the Play Store.
On point!!
myh0mie said:
Since I always tried to get the most batterylife out of my android phones, I would always set my device up, so that wifi would turn off automatically when in standby.
Now a friend of mine, who also got the S6, told me, that with the S6 I should set the wifi, so that it never turns off, not even when the phone gets to standby. His argument is, that when I'm constantly at home or at work (with wifi connections available) the wifi would use less battery power, than the 3G or 4G connection.
Also he sent me this:
http double point //www dot androidcentral dot com/android-101-save-battery-keeping-wifi-alive
(cant post the link ._.)
Is there any truth to this? Should I really put the wifi sleep policy on "never"?
Any opinions?
Click to expand...
Click to collapse
WI-FI takes less power than 3G, 4G connection. That for sure, i've tried it several times.
Just wondering if anyone has experienced the following and might have a solution. Today my P9000 has had battery drain and is showing 30% battery usage for WiFi. However the WiFi has not been able to connect, every time I switch it on it switches back off immediately without connecting to the available network - the WiFi network is working correctly.
I have done a restart and powered down for 20 minutes but still not working.
Any thoughts would be appreciated.
wich rom do you use?