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Old June 30th, 2011, 07:05 AM   #1 (permalink)
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Default Battery Life

I have the Samsung Prevail with the new Shabbymod .7 which is absolutely awesome.

I just read a review of the phone and it said this.. The device is said to last for 6.50 hours of talk time and 216 hours of standby time, which is pretty good.

Which doesn't even come close to what I get.. It is dying after 8-10 hours of idle time after being full charged should I look into getting a new one. Every time I forget the phone in my pocket and wake up the next morning it is dead... I have chargers at work, home and the car one to avoid it dying but it is just a pain.

I have GPS turned off but I usually leave wireless turned on since it is the only way I can get anything on it when I am home.. Sprint reception kinda sucks down here..

Thanks

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Old June 30th, 2011, 09:49 AM   #2 (permalink)
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The last thing you said might be the most important.
If you spend most of your time in an area with bad reception, this will drain your battery. Your phone will constantly search for signal. The weaker the signal, the harder your phone works.

Unfortunately, there's not much you can do about that other than maybe get an extended battery to help get you through the day.

Also try an app called Juice Defender for improving your battery life. It keeps your internet connection off most of the time to conserve battery. You can set it to turn on every so often to sync your email and other data.
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Old July 1st, 2011, 06:40 AM   #3 (permalink)
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You were exactly right. I turned on airplane mode last night and installed the free version of Juice Defender. Though it still is down to 60% after about 13 hours without a charge but still a huge improvement from before. Thanks
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Old July 4th, 2011, 02:01 PM   #4 (permalink)
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I use juice defender also and my battery would be dead in four to five hours now it will stretch out 15 or 16 hours under normal use..
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Old July 20th, 2011, 01:12 PM   #5 (permalink)
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Ok so I dont make a new topic I will add to this one.
I have made some changes to my phone, First I tried flashing shabby's test kernel via odin but ended up bricking my phone, so I flashed the stock unrooted via odin then updated my phone to EE14 via the ota update(last update I had to use the interdepth update solution) then I rooted and installed the test kernel( couple of reasons for that number 1 closing the back door boost conveniently has on the phone) then put on shabbymod .9 with my own personal touches and blue's royal v2 theme(by the way thanks blue).
Ok after getting it all set up and running through a few tweaks here and there I fully charged it and I now have 1 day 17 and a half hours since last plugged in, and 35% battery left.
Now this is with light use, half a dozon phone calls I think at most 2 hours of internet, not all at one time. And maybe 1 and a half of gaming time. again not all in one sitting.
Before I was getting maybe 30 hours tops with it just minimal use. and 16 with about the amount of use I have one this now.
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Old July 20th, 2011, 06:13 PM   #6 (permalink)
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Originally Posted by new optimus View Post
Ok so I dont make a new topic I will add to this one.
I have made some changes to my phone, First I tried flashing shabby's test kernel via odin but ended up bricking my phone, so I flashed the stock unrooted via odin then updated my phone to EE14 via the ota update(last update I had to use the interdepth update solution) then I rooted and installed the test kernel( couple of reasons for that number 1 closing the back door boost conveniently has on the phone) then put on shabbymod .9 with my own personal touches and blue's royal v2 theme(by the way thanks blue).
Ok after getting it all set up and running through a few tweaks here and there I fully charged it and I now have 1 day 17 and a half hours since last plugged in, and 35% battery left.
Now this is with light use, half a dozon phone calls I think at most 2 hours of internet, not all at one time. And maybe 1 and a half of gaming time. again not all in one sitting.
Before I was getting maybe 30 hours tops with it just minimal use. and 16 with about the amount of use I have one this now.
newb question - whats the difference between a kernel and a rom? I thought they were the same? where do i get this test kernel? I want to do it too...
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Old July 20th, 2011, 08:05 PM   #7 (permalink)
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newb question - whats the difference between a kernel and a rom? I thought they were the same? where do i get this test kernel? I want to do it too...
ok i dont have specifics on the rom vs kernel but you know that android is based on linux right? Well the kernel is the underlying infrastructure and the rom runs on it you cant have the rom without the kernel.

and you can get it from this thread.

Absolutely amazing boost....
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Old July 21st, 2011, 12:20 AM   #8 (permalink)
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ok quick update 2 days 4 hours now sitting at 7% left.

and the last 12 hours have had more use then the previous day.
Now only one problem maybe shabby or someone would care to investigate. When the battery gets to 10% the screen damn near shuts off. I know it is a power save feature but I think its annoying as hell and if I feel the need to conserve the power I will shut it off on my own. And other times I am trying to discharge more juice and this makes it take longer.
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Old July 21st, 2011, 08:28 AM   #9 (permalink)
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ok, now 2days 12 hours and it finally ran down to 1% I been using it for about and hour now this morning fairly heavily.
I am quite pleased with the battery life this time. No juice defender or other task manager on the phone I did/do use the back button to kill tasks soon as I am done using them though.
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Old July 21st, 2011, 08:38 AM   #10 (permalink)
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Though this is nothing compared to my lg optimus M, it has been on for 2days 6 hours and still at 66%. Though with very limited use. It is not on the cell network anymore though it is used as a voip phone with sipgate and google voice.
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Old July 21st, 2011, 07:08 PM   #11 (permalink)
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Originally Posted by new optimus View Post
Though this is nothing compared to my lg optimus M, it has been on for 2days 6 hours and still at 66%. Though with very limited use. It is not on the cell network anymore though it is used as a voip phone with sipgate and google voice.
Hey Optimus , I have read that disabling Agent IQ will help with battery life . Have you seen anything on this ? I Odined back to basic then installed all the Shabbymods (including Kernel) and my battery life went from sugar to sh*t . I am gonna try the Agent IQ fix for a couple of days and see what happens . I have no idea why I started getting crappy battery life all the sudden . I've checked my running processes and they are as follows :

RetroClock
"TimeService"

IQ Agent (stopped)

SystemUpdates
"SanService"

com.Samsung.internal
"AndroidSprintExtensionService"

GoogleServiceFramework
"GoogleMessageService"

DRM Protected Content Storage
"OmaDrmConfigService"

Market
"AlarmService"

GoLauncher EX
"AppService"

Swype

I am also gonna try and reset my batteries by draining them all the way down til they cut off . If you've got any recommendations or see something out of the ordinary , plz let me know . Thx
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Old July 21st, 2011, 08:50 PM   #12 (permalink)
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Hello everyone I am new to this form. Post by New Optimus: ok i dont have specifics on the rom vs kernel but you know that android is based on linux right? Well the kernel is the underlying infrastructure and the rom runs on it you cant have the rom without the kernel.
New Optimus its the other way around, The kernel being the core of your operating system witch is linux. Rom is a little chip witch sits on the motherboard of your phone and store your operating system. So when you flash the rom your changing the operating system and restoring it on the rom.
I hope this helps
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Old July 21st, 2011, 09:23 PM   #13 (permalink)
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Quote:
Originally Posted by wetbiker7 View Post
Hey Optimus , I have read that disabling Agent IQ will help with battery life . Have you seen anything on this ? I Odined back to basic then installed all the Shabbymods (including Kernel) and my battery life went from sugar to sh*t . I am gonna try the Agent IQ fix for a couple of days and see what happens . I have no idea why I started getting crappy battery life all the sudden . I've checked my running processes and they are as follows :

RetroClock
"TimeService"

IQ Agent (stopped)

SystemUpdates
"SanService"

com.Samsung.internal
"AndroidSprintExtensionService"

GoogleServiceFramework
"GoogleMessageService"

DRM Protected Content Storage
"OmaDrmConfigService"

Market
"AlarmService"

GoLauncher EX
"AppService"

Swype

I am also gonna try and reset my batteries by draining them all the way down til they cut off . If you've got any recommendations or see something out of the ordinary , plz let me know . Thx
I dont see anything in that list of running services that jumps out at me.

did you check to see if the boost back door is closed?
Quote:
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if you want to see if its been disabled in terminal emulator type the following

pidof RescueStarter
pidof RescueServer

if it gives a number then its running.. this kernel should halt that tho
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Old July 21st, 2011, 11:26 PM   #14 (permalink)
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Originally Posted by new optimus View Post
I dont see anything in that list of running services that jumps out at me.

did you check to see if the boost back door is closed?

Yeah , I installed the Shabbykernel and shut the backdoor . I went ahead and started from scratch again . I'll see what happens over the next couple of days . Thanks again .
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Old July 21st, 2011, 11:58 PM   #15 (permalink)
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no problem.
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Old July 23rd, 2011, 05:31 AM   #16 (permalink)
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Originally Posted by new optimus View Post
Ok so I dont make a new topic I will add to this one.
I have made some changes to my phone, First I tried flashing shabby's test kernel via odin but ended up bricking my phone, so I flashed the stock unrooted via odin then updated my phone to EE14 via the ota update(last update I had to use the interdepth update solution) then I rooted and installed the test kernel( couple of reasons for that number 1 closing the back door boost conveniently has on the phone) then put on shabbymod .9 with my own personal touches and blue's royal v2 theme(by the way thanks blue).
Ok after getting it all set up and running through a few tweaks here and there I fully charged it and I now have 1 day 17 and a half hours since last plugged in, and 35% battery left.
Now this is with light use, half a dozon phone calls I think at most 2 hours of internet, not all at one time. And maybe 1 and a half of gaming time. again not all in one sitting.
Before I was getting maybe 30 hours tops with it just minimal use. and 16 with about the amount of use I have one this now.
Have to drop a thanks for this Optimus. Before reading this thread i was getting about a days use out of my phone, which i didn't think was terrible, it did what i needed.
I decided to give your steps a try, Odin to 13 OTA to 14, than shabby Kernel, than my modified Shabby semi - loaded. That was yesterday morning. I started the process at 80 % now without charging just about 24 hours later I am at 36 % at fairly average usage for me.

So far a great improvement in battery life with just those steps, if there are any other tweaks or tips i could add in I would love to hear them
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Old July 23rd, 2011, 08:16 PM   #17 (permalink)
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I, too, repeated optimus' steps and am experiencing much improved battery life.
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Old July 23rd, 2011, 11:06 PM   #18 (permalink)
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Good to hear I know I am very happy with the battery now, no freezing no lagging and very little weird stuff.
Let me explain the weird stuff. I use no lock to keep from having to swipe the screen all the time well sometimes my screen will go into lock then flick back unlocked. I am guessing it is something with no lock though it never did that with my optimus so oh well.
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Old July 23rd, 2011, 11:28 PM   #19 (permalink)
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Good to hear I know I am very happy with the battery now, no freezing no lagging and very little weird stuff.
Let me explain the weird stuff. I use no lock to keep from having to swipe the screen all the time well sometimes my screen will go into lock then flick back unlocked. I am guessing it is something with no lock though it never did that with my optimus so oh well.
After doing the Odin ED13 recovery , I did the OTA EE14 update , turned off Auto-sync and cycled my batteries . I am now getting almost twice the battery life . I one happy camper today .
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Old July 26th, 2011, 11:39 AM   #20 (permalink)
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First day with new phone and new battery. So, far incredible battery life, but not really a fair test.....More on this tonight. Too much work to do.
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Old July 26th, 2011, 04:39 PM   #21 (permalink)
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First day with new phone and new battery. So, far incredible battery life, but not really a fair test.....More on this tonight. Too much work to do.
I've noticed a difference between the Chinese batteries and the stock Samsung batteries . ! Oh well , ya get what ya pay for huh ! Good thing I bought two of them .
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Old July 26th, 2011, 05:52 PM   #22 (permalink)
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First day after adopting New Optimus' Long Battery Life Doctrine (NOLBLD, the government or the old IBM would require an acronym better than this for a system that has the potential to do so much for mankind, maybe somebody can come up with a better one):

After 12 hours exactly since I took the new phone off the charger with the first charge of the new battery, my battery left % is at.....wait for it....drum roll please......90%!!!!!

This is incredible, but I do have an confession: Because I was in a warehouse all day today where CDMA does not work, I had the phone in Airplane mode for all of about 2 hours today. But, I do this all the time and have never seen battery % like this! My old phone and battery could use battery doing nothing, like I can sweat standing still.

Tomorrow, I will be at the same place and I will turn on the WIFI to see what happens. Friday, I will be driving approx 120 miles round trip through a varied assortment of Boost coverage strength so I will see how it does with the phone turned on. Of course, I have the phone on now, so that will be a good test until tomorrow morning, leaving it off the charger. Gonna let that baby drain to zip the first two cycles and then after that see what happens.

Thank you New Optimus for putting all the together for the greater good of mankind. We salute you, sir!
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Old July 26th, 2011, 07:14 PM   #23 (permalink)
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First day after adopting New Optimus' Long Battery Life Doctrine (NOLBLD, the government or the old IBM would require an acronym better than this for a system that has the potential to do so much for mankind, maybe somebody can come up with a better one):

After 12 hours exactly since I took the new phone off the charger with the first charge of the new battery, my battery left % is at.....wait for it....drum roll please......90%!!!!!

This is incredible, but I do have an confession: Because I was in a warehouse all day today where CDMA does not work, I had the phone in Airplane mode for all of about 2 hours today. But, I do this all the time and have never seen battery % like this! My old phone and battery could use battery doing nothing, like I can sweat standing still.

Tomorrow, I will be at the same place and I will turn on the WIFI to see what happens. Friday, I will be driving approx 120 miles round trip through a varied assortment of Boost coverage strength so I will see how it does with the phone turned on. Of course, I have the phone on now, so that will be a good test until tomorrow morning, leaving it off the charger. Gonna let that baby drain to zip the first two cycles and then after that see what happens.

Thank you New Optimus for putting all the together for the greater good of mankind. We salute you, sir!
Wow that acronym is a mouth full. Your welcome I am glad it has helped.
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Old July 26th, 2011, 07:27 PM   #24 (permalink)
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Is this with Juice Defender or any other such program?

No dis but hows bout we change it to NOBLED ( New Optimus' Battery Life Extender Doctrine)
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Old July 26th, 2011, 07:40 PM   #25 (permalink)
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Is this with Juice Defender or any other such program?

No dis but hows bout we change it to NOBLED ( New Optimus' Battery Life Extender Doctrine)
Nope these battery numbers are without any such app .. I have been getting great life on the 2 prevails in my house
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Old July 26th, 2011, 07:43 PM   #26 (permalink)
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Nope these battery numbers are without any such app .. I have been getting great life on the 2 prevails in my house
Excellent! Will try it out.
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Old July 26th, 2011, 08:25 PM   #27 (permalink)
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Is this with Juice Defender or any other such program?

No dis but hows bout we change it to NOBLED ( New Optimus' Battery Life Extender Doctrine)
No Juice Defender or any battery app. I have tried them all except for Tasker. I am too lazy to read the docs but it sounds wonderful.

I believe that part of my problem is that my Boost signal at home is really low and this is putting a drain on the battery. I just went to eat at a restaurant that is less than a mile from my house. I got the BEST signal I have ever gotten and the Speedtest was 1627kbps download and 627kbps upload. At home earlier I got 116 and 381. I never got signals that high before with the fried phone. At home, they vary wildly, but never over about 600 download. That restaurant is on the main drag out in the wide open near the center of town in a commercial district. Good Signal.

My house is nestled in some trees as is the whole neighborhood. For years I could pick up WIFI from the church next door but it was better in the Winter when the leaves were gone. Forgive me, Jesus.

And BTW Cheezer, Thanks for the new Acronym. I was hinting for someone with some brain cells to provide one.
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Old July 26th, 2011, 08:51 PM   #28 (permalink)
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No battery apps not even a task scheduler or monitor.
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Old July 26th, 2011, 09:21 PM   #29 (permalink)
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weird I did everything new optimus listed but my phone still has terrible battery life
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Old July 26th, 2011, 11:32 PM   #30 (permalink)
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Originally Posted by moses166 View Post
weird I did everything new optimus listed but my phone still has terrible battery life
Your battery life is dependent on a lot of things. If your phone is constantly searching for a signal it will drain the battery and if its constantly searching for a open WiFi. Everybody will have different results based on their geographical locations and phone settings.

I use Juice Defender Plus and Watchdog and I get over double my battery life with my WiFi and GPS enabled. Switching to .8 Slim also extended my battery life over .9 loaded a little
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Old July 26th, 2011, 11:50 PM   #31 (permalink)
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Originally Posted by Purponic View Post
Your battery life is dependent on a lot of things. If your phone is constantly searching for a signal it will drain the battery and if its constantly searching for a open WiFi. Everybody will have different results based on their geographical locations and phone settings.

I use Juice Defender Plus and Watchdog and I get over double my battery life with my WiFi and GPS enabled. Switching to .8 Slim also extended my battery life over .9 loaded a little
I always keep WiFi, Gps, and location service disabled. i also keep the backlight down too, maybe its because i live in a area i with bad reception.
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Old July 27th, 2011, 12:37 AM   #32 (permalink)
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Originally Posted by moses166 View Post
I always keep WiFi, Gps, and location service disabled. i also keep the backlight down too, maybe its because i live in a area i with bad reception.
Very possible, one of the biggest contributors to battery drain is searching for service.

To test it try putting the phone in airplane mode for about 10 hours, if you can manage no calls or texts for that long
If you battery does not drain very much you know the search for signal is the culprit.
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Old July 27th, 2011, 12:56 AM   #33 (permalink)
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Originally Posted by new optimus View Post
Very possible, one of the biggest contributors to battery drain is searching for service.

To test it try putting the phone in airplane mode for about 10 hours, if you can manage no calls or texts for that long
If you battery does not drain very much you know the search for signal is the culprit.
yea i think its that n also there are two big trees in my backyard so i think thats part of the problem. thanks for the help
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Old July 27th, 2011, 05:59 AM   #34 (permalink)
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Well, I used the phone a lot last night from 6:30PM till 11:30 and my battery dropped from 90% to 50%. I made two short calls, did some texting, browsing, ran speedtest a lot, downloaded apps, used Titanium Backup a lot. I was constantly fiddling with it. I used WIFI some but mostly 3g.

From 11:30PM until 5:30AM this morning it dropped another 10% while I slept. Phone was on, everything else including sync was off. My signal is usually pretty low. This is definitely better than it was before.
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Old July 27th, 2011, 10:33 AM   #35 (permalink)
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Even after doing all the battery tweaks , one fact remains ......... the Prevail is a power hungry little critter . If I plan to use my phone a lot throughout the day , you can best believe I'm gonna carry and extra battery with me . I am still very please with my Prevail and you just can't beat the monthly payment . A couple more months and I'll be down to $40 ! WOOOOOO HOOOOOO !!!
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Old July 27th, 2011, 12:13 PM   #36 (permalink)
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Even after doing all the battery tweaks , one fact remains ......... the Prevail is a power hungry little critter . If I plan to use my phone a lot throughout the day , you can best believe I'm gonna carry and extra battery with me . I am still very please with my Prevail and you just can't beat the monthly payment . A couple more months and I'll be down to $40 ! WOOOOOO HOOOOOO !!!
No doubt about it, as I said my optimus (which is also modified including running cpu at almost the same speed as the prevail) can last double or longer the time the prevail does.
But there is no getting around the fact my bill is cheaper with boost and data speed blows metro's out of the water.
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Old July 27th, 2011, 01:02 PM   #37 (permalink)
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Yep. The Prevail likes to drink the juice. I left it in the car today since it is fairly cool and left it in normal mode. That was at 7:30AM. I have driven around town some and got some calls. After almost 32 hours it is down to 30%. Even without Airplane mode it is running very much better than before. Most of the drain was from last night at home and I was on it steady for almost 5 hours.

I think that my record with the old phone was about 24 hours and that was with a lot of attention and coddling and probably pretty much a fluke. Usually I would get about 16 hours max. I am very happy with these results. All because of NOBLE.

This weekend will be interesting since I will be home most of the time in a low signal area. I will probably have it set up like I want it by then so it will sit idle a lot of the time.

edit:

Almost 6PM at home and it is at 29%! I am a believer! that is 36 hours since I took it off the charger after the first charge. I will probably drain it tonight playing with it and start over tommorow.
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Old July 29th, 2011, 05:34 PM   #38 (permalink)
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Looks like I am getting over 52 hours plus on a battery charge. And that is with normal usage or how I normally use it. Much better than the 16-18 hours I used to fight like hell to get. I believe it is because of the enhancements made by Shabby in the Mods and his Kernel and the other tweaks and order of operations figured out by Optimus.
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Old July 30th, 2011, 01:27 AM   #39 (permalink)
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Quote:
Looks like I am getting over 52 hours plus on a battery charge.
Simply amazing! NOBLE really WORKS!!!! folks.
running since 8 am till now 11:26 pm. still at 72%.
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Old August 3rd, 2011, 08:09 PM   #40 (permalink)
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fyi....

I've been using juice defender and was getting horrible battery life. With the normal default settings for the app I was getting less than a day's worth with minimal use, actually hardly any use at all. I uninstalled juice defender and now my battery now lasts for over two days with normal use...
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Old August 29th, 2011, 08:08 PM   #41 (permalink)
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With out using Juice Defender or any other batter saver I saved more on battery life by using my data signal when I need it. Example: Iím using DCSwitch. https://market.android.com/details?id=org.cohortor.dcs&feature=search_resultI turn it on when I need the net and off when Iím done. The same goes for Wifi in the house.
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Old August 30th, 2011, 09:21 AM   #42 (permalink)
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I ended up buying a handful of these USB cables:
For only $0.84 each when QTY 50+ purchased - 3ft USB 2.0 A Male to Micro 5pin Male 28/24AWG Cable w/ Ferrite Core (Gold Plated) | USB 2.0 Cables - Micro-B Type

and a pair of these, one for each of my vehicles:
For only $0.99 each when QTY 50+ purchased - Car Charger (Cigarette Lighter) to USB Female Converter - White | Car Charger Accessories

I spent about 6 bucks and now I have chargers everywhere I go, so I have no excuse to not plug the thing in
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Old August 30th, 2011, 10:34 PM   #43 (permalink)
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Here is something very simple most of you maybe doing it already. Make sure your using the back key to close your apps and not the home key. The home key will leave your apps running in the back ground. Apps running you the background will use up battery life.
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Old September 1st, 2011, 07:00 AM   #44 (permalink)
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With all the ideas floating around out there, why doesn't the smart phone makers put an extended battery and extended battery cover in and on the phones they sell. This would be a great option and solve most of the problem if not all the problem? Just thought I would ask.
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Old September 3rd, 2011, 02:28 AM   #45 (permalink)
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Try Juice Defender Ultimate and slam it into the extreme profile for ultra battery usage. I have it on my prevail with shabby 0.9 and simple green theme and on average i get about 12 hours out of the prevail without charge.
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Old September 3rd, 2011, 05:19 AM   #46 (permalink)
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Originally Posted by officialmeatg View Post
Try Juice Defender Ultimate and slam it into the extreme profile for ultra battery usage. I have it on my prevail with shabby 0.9 and simple green theme and on average i get about 12 hours out of the prevail without charge.
Juice Defender is not needed .. read through this topic I get 2 days of usage without charge following what was posted here
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Old September 3rd, 2011, 07:40 AM   #47 (permalink)
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Thanks. I am looking into everything that was posted here and will consider every option available. I am also thinking of rooting my phone. I just dont want to brick my phone and I don't know a lot about rooting. Thanks again for all the info.
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Old September 4th, 2011, 07:46 AM   #48 (permalink)
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I've got some questions, maybe somebody can explain it to me. Is one click root and shabbymod 0.9 the same? Do both root your phone? Is one better than the other? What should I use to root my phone? Thanks.
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Old September 4th, 2011, 08:35 AM   #49 (permalink)
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Juice Defender is not needed .. read through this topic I get 2 days of usage without charge following what was posted here
I get 2+ days of usage from my phone with Juice Defender installed on my modified stock. The backdoor that the kernel closes doesn't even run in the background so it couldn't be eating up juice. You guys are just feeling a placebo effect.
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Old September 4th, 2011, 09:07 AM   #50 (permalink)
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Originally Posted by Purponic View Post
I get 2+ days of usage from my phone with Juice Defender installed on my modified stock. The backdoor that the kernel closes doesn't even run in the background so it couldn't be eating up juice. You guys are just feeling a placebo effect.
my post was not meant to say Juice defender doesn't work just that it is not needed to achieve better battery life using it or not is individual choice ..

also since myself and others have seen actual increase in battery life it obviously is not a "placebo effect"
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