this is by no means a definitive list, but here are a few links to articles i have read that have helped improve my battery life drastically. if you have any other useful information, please share.
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instead of thinking, 'i need to replace the battery because it doesn't last long enough', try thinking 'how can i use my phone in a manner which doesn't unnecessarily drain its battery'.
HowToGeek.com - Complete Guide to Maximizing Your Android Phones Battery Life
Lifehacker.com - Android Task Killers Explained; What They do and Why You Shouldn't Use Them
Reddit.com - I Stopped Using a Task Killer Last Week to See if There is a Difference; There is, and its Huge
Reddit.com - Further Discussion on the Proper Use of Task Killers
Lifehacker.com - JuiceDefender Simplifies Automated Android Battery Saving
Lifehacker.com - Watchdog Monitors Your Android for Runaway Processes
Thanks for this -
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
fnds said:
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
Click to expand...
Click to collapse
I'm not sure about the stock rom, but on cm roms there is the option to add this option into the power widget bar and makes switching between modes a one click affair. I keep my phone on 2g (gsm) unless I'm trying to watch a video. It definitely helps.
Sent from my cm7 Aria using XDA App
fnds said:
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
Click to expand...
Click to collapse
I am trying that out and using GSM (PRL), it seems to do very well, and automatically switches between HSDPA and EDGE
Just switched mine from WCDMA preferred to the CDMA/GSM Auto (PRL)
I'll see how it goes.
that battery has lasted longer than usual, even with the extreme cold of the midwest, since I was shoveling for 3 hours. 8 hours off of charger, moderate use, still at 80% with GSM (PRL) on
tried the GSM(PRL) thing, works great! thanks for this thread
Been noticing the drain, too. I've switched to CDMA/GSM Auto (PRL), but it still shows the "H" at the top? I think that's correct, but wanted to ask.
So how often is it kicking you guys to EDGE? It may give you better battery life, but your data will be slow as hell if you aren't on 3G no? Or do you guys not care?
gtg465x said:
So how often is it kicking you guys to EDGE? It may give you better battery life, but your data will be slow as hell if you aren't on 3G no? Or do you guys not care?
Click to expand...
Click to collapse
I switched to cdma/gsm auto (prl) about a week ago and mine hasn't switched over to Edge at all.
Sent from my cm7 Aria using XDA App
fnds said:
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
Click to expand...
Click to collapse
Sent from my HTC Liberty using XDA App
I have know idea how to do this. I dial *#*#4636#*#* and it calls it and says blah blah wrong number. Can somebody explain please. I'm a noober on this one.
"the only good bug is a dead bug"
Figured it out. I use dialer 2 app for my default phone. Apparently you have to use the stock dialer to enter ussd code.
"the only good bug is a dead bug"
So, is it harder on my battery to be connected to wifi or not? TIA
No offense, but you start question threads on a development forum that are easily answered with google. A thread should only be started when all resources have been exhausted and the answer can't be found elsewhere.
Wifi effect on Battery life with android
good day.
No, it's not. 3G uses more battery, especially when the signal is fluctuating all over the place.
I'm actually a perfect candidate for this, as in my apt, 3G signal is rather weak. I'm gonna leave the wifi on and see what happens.
I've been getting GREAT battery life with stock Voodoo and no wifi at all, just GPS turned off except when Im using it, and now I'm gonna try with wifi on at all times at home, and at work, and see what happens.
I'll report back tomorrow after work.
I can verify that having wifi on in low 3g areas helps tremedously. At work I get 1 bar and it fluctuates between 1x and 3g so I have wifi enabled all the time. After being in the office a majority of the day for about 8 hours I'm down to about 75% when I leave. If I leave wifi disabled and rely on 3g I'll leave with about 49-55%. It's the same at home except it is 1 bar of 3g so battery drain isn't that bad. I use a program called y5 that enables and disables wifi according to location. It uses Cell towers instead of GPS so not too bad of a strain on battery. YMMV
jv
johnnyv5 said:
I can verify that having wifi on in low 3g areas helps tremedously. At work I get 1 bar and it fluctuates between 1x and 3g so I have wifi enabled all the time. After being in the office a majority of the day for about 8 hours I'm down to about 75% when I leave. If I leave wifi disabled and rely on 3g I'll leave with about 49-55%. It's the same at home except it is 1 bar of 3g so battery drain isn't that bad. I use a program called y5 that enables and disables wifi according to location. It uses Cell towers instead of GPS so not too bad of a strain on battery. YMMV
jv
Click to expand...
Click to collapse
I'll go further than that. Even with a strong 3G signal at work having Wifi on uses less battery then 3G only on my stock (waiting for the right Froyo) Fascinate. With my crappy 3G signal at home there is no question like previously stated.
I'm in mexico for a wedding and I noticed my clock won't change to the correct time. I came from Eastern time and Mexico City is the equivalent to Central time in the US. I have the default settings checked where I get the time zone from the network and automatically adjust time. Using any weather app shows correct location, but the clock won't change. An easy temporary fix would be to manually set the time, but I didn't have this issue 2 years ago when I was rockin' a Thunderbolt.
Sent from my SM-N900V using Tapatalk
Check if your time setting is set to auto network and not a specific time zone. If it is set to auto, then your guuess is as good as mine.
If you are in airplane mode the cellular radio is not on so it can't update the time from the cell tower. The other issue could be proximity to the edge of the time zone and you are getting a tower from eastern still. This is a problem is border areas where you can get a cell tower from the other country or time zone.
For some reason, I get the worst signal at my location where I both live and work. I can go a mile or 2 down the street and it works fine. This is outdoors on a clear day. No obstructions. Anyone have a better APN setup they're using that gives a good strong LTE signal? I have screenshot my stock out of the box APN.
Have you used an app like Network Cell Info to see what the signal strength and such is between your locations?
Owing to how EM propagates, and how interference can be generated, it could be wildly different between the two.
http://wilysis.com/networkcellinfo
I've been using cell tower location aware apps for years. I just got the Z, and all of a sudden Llama can't find any cell towers even when connected. If the phone is set to "global" or "CDMA" none of the cell polling/cell ID locating apps work. I have to select GSM as the network type to get any cells to show up. Clearly the phone is connected, as I can make calls.
Why is this happening, or not happening?