yashsingh1/xdaforums huggingface dataset:
[T-Mobile Samsung Galaxy S II SGH-T989] mastaglaus:
Can nayone tell me why the Android system stats are considerably higher then any other peoples screenshots they have posted? Someone know what that encompasses? It always seems to be second on the list below display.
[T-Mobile Samsung Galaxy S II SGH-T989] ixJay:
Well thanks for this useful piece of information. I deleted Advanced Task Killer.. So lets see if my battery life is now saved.. if not, then mayb my battery just sucks or theres something else going on with my phone that i dont know about.
[T-Mobile Samsung Galaxy S II SGH-T989] mettleh3d:
A lot of people have bad battery problems. 4G does that.

Experiment: Tonight, charge your device to 100%, Turn ON airplane mode (ie all radio connections off) wifi OFF, and unplug your phone. Check the battery in the morning.

The batteries and phones are not the problem, its what we demand to use on this phone and the toll its taking.
[T-Mobile Samsung Galaxy S II SGH-T989] gamefreakgcb:
Even without turning radios off, I love the sleep on my device. I unplugged it at 1AM and at 8AM in the morning it was only down to 92%. That is very good. Now I'm at 24% (from that same charge) and its 7:10 PM. I just now switched to EDGE only (no more need of intensive data till tomorrow) and will see if I can get to 1AM before 0%.
[T-Mobile Samsung Galaxy S II SGH-T989] Flash23:
Okay, I set up Llama the way it is in the OP... Now it works fine but I noticed that when Im driving or not in my wifi range, it is still looking to find a network and sometimes it does depending on where exactly I am at... Isnt this draining my battery? Is there a way I can disable Wifi when im not on any of my wifi networks and using 4g?
[T-Mobile Samsung Galaxy S II SGH-T989] Ace42:
I have a question about this phone. If it has root available, has anyone underclocked the phone, and if you have is the battery life significant? Is the phone slower or more or less the same?
[T-Mobile Samsung Galaxy S II SGH-T989] :
Its been proven that under clocking doesn't really save battery under-volting will though.Dual core Qualcomm processors work best at stock clocks usually.
[T-Mobile Samsung Galaxy S II SGH-T989] fatannasty:
I had a problem with the first sgll. ..I would only get max 6 hours ...after a lot of testing I realized it was the actual phone. ...went back to the T-Mobile store exchanged the phone, condition the battery for two cycles.look at what I'm getting on one charge without any battery saving apps. Compare it to my first post about five days ago to now
[T-Mobile Samsung Galaxy S II SGH-T989] outrayge:
How did you test your phone to find out it was a problem with the phone? I think my phone may have the same issue but I'm not sure.
[T-Mobile Samsung Galaxy S II SGH-T989] ryan562:
then what about samsung touchwiz's built in taskmanager? it seems to run in the background all the time. would u recommend i delete it via root explorer??
[T-Mobile Samsung Galaxy S II SGH-T989] gamefreakgcb:
I'm not sure you noticed, but he mentioned that Task Managers are OK, Task Killers are a problem.
[T-Mobile Samsung Galaxy S II SGH-T989] ixJay:
Okay so, I leave my house at 515pm wt 87% battery life, get home at 225am with 7% battery life.. 4g is up and running the whole time. Besides when screen is locked.. Cause juice defender tends to disable 4g then.. I used my phone fkr texting(heavily) and was on the phone for about 30mins or so.. Phone screen light is at 40% at all times.. Is my battery life good for how much has been used from what im doing.. Or do u guys think I shouldve had more juice in my battery?
[T-Mobile Samsung Galaxy S II SGH-T989] mettleh3d:
Awesome man
[T-Mobile Samsung Galaxy S II SGH-T989] :
That's about 9 hrs heavy usage which is average to good depending on the user. Another way to save more battery is turn haptic feedback off. When your phone vibrates it usages more energy then it would when just using sounds. If you were texting heavily I expect the phone to be vibrating a lot during the time it was on. If your in a t-mobile 42mbs network expect to have a little less battery life since the phone is taking in more bandwidth for better data speeds.:cool:
[T-Mobile Samsung Galaxy S II SGH-T989] fatannasty:
Condition the battery three times ...the phone continued to give me 6 hours max. ..put my battery in my wife phone and she got 12 plus hours
[T-Mobile Samsung Galaxy S II SGH-T989] floot_roops:
Hi all, new to the forum, but I've been avidly reading this thread. Haven't had Android since the original G1, but I'm back now with a T-mo Galaxy S2, and I'm trying to figure out what realistic battery life is before employing power-saving apps such as JuiceDefender. Basically, I want to know if my phone is "normal" because I've felt that the battery has been draining very quickly (again, trying to discern my lack of experience with recent android devices from a possible inherent defect in the battery).

Day to day, I find my battery lasts about 10 hours. As the phone is new, I'm probably playing with it for about an hour of that time (usually web browsing or messaging). Screen brightness is locked at 35% or so. Typically on wifi at all times unless I'm in the car (15 minutes of that time). Bluetooth is left on, but has only demonstrated negligible battery use (i.e. 2%). No live wallpaper. Items that I know are syncing or active: gmail, maps (latitude -- gps off), gtalk. No facebook installed, t-mo backup disabled. (I should add that this involves little voice calling, about 5-10 minutes max).

There appears to be some variability in usage of the battery as well. The other morning, I noticed a 30% drop in battery over 2 hours when I hadn't taken the phone out of my pocket. My stats showed that voice calls (there was one 4:51 min call on bluetooth while driving) accounted for 40% of this usage. However, that same day, I tried streaming netflix for 90 minutes on wifi and the battery discharged about 50%. The two seem rather disproportionate from one another. I expect streaming video to kill the battery, but a phone call?

Last night, I charged fully, ensured there were no active tasks running with the task manager, then unplugged the phone and left it aside. I kept wifi on and connected to my home network in order to approximate day-time "idle" state such as when I'm at work.

The following is my status as of this morning. As you can see, I woke the phone and checked battery status quickly enough that "display" doesn't even show up as one of the battery usage items.

Installed applications:

Setting Profiles (with just one rule-set that mutes notifications when charging),

Google+,

Bar Code Scanner,

Google Music,

Shazam,

Chase mobile banking,

Epocrates

Netflix

Citrix Receiver

I appreciate any thoughts/comments regarding my device's battery usage. Thanks in advance. Sorry if this was long-winded. I did watch the noob video on registering, and I also wanted to provide as much info as I could :)

Again, these pictures are after 8.5 hours of sitting on the nightstand unplugged, no contact with the phone overnight.
[T-Mobile Samsung Galaxy S II SGH-T989] mziol:
That's roughly what I get on idle. Try using the phone now and see if you can watch the percentage drop as you are using it (i.e. browsing xda on the phone).
[T-Mobile Samsung Galaxy S II SGH-T989] mziol:
I'm assuming she also has a gsII? Thanks a lot for this, if you have roughly the same apps on both phones and similar useage I think this shows it an issue with the device itself and not the battery. I'm thinking it's a screen issue (some are using more battery than others to operate).

Now my only question is: Can you just go in to a T-Mobile store and get a phone exchange even though it's only a battery issue? I doubt they would go for that.
[T-Mobile Samsung Galaxy S II SGH-T989] mettleh3d:
Overnight, 4g on, unplugged sine 1:10 am.

That's roughly 3% an hour and I specifically turned all background data off.
[T-Mobile Samsung Galaxy S II SGH-T989] floot_roops:
Thanks for the input. It seemed high to me for idle processes and data syncing. Granted, I'm biased from coming from the blackberry world, but 43% just to check the server every once in a while? I know this phone is way more advanced, but for the tasks it had to do overnight... No screen usage, no conscious application usage, etc. I know wifi was on, but the phone indicates that was a fraction of battery usage.

Tonight, I'll use airplane mode with wifi off and repeat the test.

What is a reasonable amount of drop in 8 hours under those conditions? (all radios off)
[T-Mobile Samsung Galaxy S II SGH-T989] ixJay:
Phone has been off the charger for 5 hours, with 10%dropped in those 5hrs.. With About 10-20 mins of use.. Good or bay?
[T-Mobile Samsung Galaxy S II SGH-T989] mziol:
Better than what I'm getting.
[T-Mobile Samsung Galaxy S II SGH-T989] mettleh3d:
I was able to squeeze 2.5~3 hours before 1% dropped on airplane. Please try airplane tonight and I will post my airplane test as well.
[T-Mobile Samsung Galaxy S II SGH-T989] Jjday7:
Juice Defender results. The pic below was with 7% still remaining on the battery. The phone was on from about 9:45am to past midnight

This is the longest I have gotten off the battery since I got the phone. This is with 45 minutes of calls, 25 Text messages, 40 emails, 30 minutes of youtube, 1 hours of web surf, and 20 minutes of gaming.
[T-Mobile Samsung Galaxy S II SGH-T989] ralnee:
Update to 100% battery display issue

So I swapped out the original battery with a new battery from T-Mobile which worked fine for about 24 hours, then the same issue appeared. The battery level always displayed 100%. :mad:

The next step would be to work this as a battery calibration issue so yesterday, I ran a flashlight app (that turned on the LCD flash as well as the display) to discharge the battery.

I charged the battery overnight and this morning once again, it seemed stuck on 100%. I ran the flashlight app again and to discharged the battery fully. It's currently charging normally.

If this is a battery calibration issue, I figured I'd have to do this at least 3 or 4 times before the battery should be calibrated. :confused:

If the problem continues then its either a hardware or firmware problem. :eek:
[T-Mobile Samsung Galaxy S II SGH-T989] mettleh3d:
Overusing the LED flash may not be so good for the phone ive heard. But maybe I'm mistaken.
[T-Mobile Samsung Galaxy S II SGH-T989] Darmokk:
I had the 100% battery problem, and the "won't charge while powered off" problem and exchanged my phone at T-mobile. It's only been 24 hours, but so far so good
[T-Mobile Samsung Galaxy S II SGH-T989] floot_roops:
Hi all, as I was saying yesterday, I ran airplane mode overnight after charging to 100%. Sorry, couldn't grab screenshots this morning (somehow fumbled and shut off phone when attempting, and stats reset when you reboot), but my battery was at 98% after 9 hours. (95% or so of battery usage was "phone idle")

That's awesome.

And perplexing.

So, the night before, with wifi on and the phone just sitting next to the bed untouched, I lost more than 40% of my battery (as noted, I left wifi on because I wanted to simulate what the phone would be doing sitting in my pocket while at work). The system said only 2% of battery usage was from wifi, but that can't be right. Overall, the way I see it, what my device was actually doing two nights ago was maintaining a wifi connection, maintaining a cellular connection for phone calls, and intermittently syncing data, all of which to me are "background tasks."

After reading about Juice Defender, I have a feeling it will help me a significant amount since the phone seems to burn through so much charge on just idle tasks. I understand that actual usage of the phone will tear through the battery considering what a powerful device it is, but maximizing the charge during idle times will likely have the highest yield in prolonging battery life.

In short, though the battery usage does seem goofy at times, I believe that my device/battery are not defective after last night's tests, and software solutions (i.e. battery defender) will be of benefit. Does this make sense?
[T-Mobile Samsung Galaxy S II SGH-T989] mettleh3d:
With airplane mode on. And this is after I reboot because it said 100%, and I've never had the 100% bug problem before.

Edit: ok 2nd image shows unplugged since 1am?, 99%. The moral should be the batt and phones AREN'T the issue.

---------- Post added at 07:26 AM ---------- Previous post was at 07:09 AM ----------

I used jd last week and jd turns off your 4g/edge radio for 15 to 30 mins at a time to check new incoming (you set which, more times available in the paid version), while your phone is locked and asleep. While this did significantly prolong my battery life, at the moment I want to find the sweet spot of settings that would allow me to have 14+ hours of use with 4g on and receive all my emails and notifications and whatnot on time as we all intended from this great device.

But this is not a knock on jd, it's a knock on the sgs2's need for battery compromises.
[T-Mobile Samsung Galaxy S II SGH-T989] le14:
I charged my phone to 100% last night before I went to bed just so that I could check the battery performance. I turned off the WIFI, data services, and did not use the phone at all for 5 hours. The battery life went from 100% to 84% in that 5 hours of being Idle. This does not seem correct to me since I was not using it or anything at all.

Any thoughts? Also, I had the running applications seen by active applications exited as well.

Thanks
[T-Mobile Samsung Galaxy S II SGH-T989] Darmokk:
Seems like something was running and/or syncing in the background. Do the experiment again but instead of turning those services off, just enable airplane mode and see what kind of results you get then?
[T-Mobile Samsung Galaxy S II SGH-T989] le14:
I turned background sycing off as well. I wanted to just simulate what would go on during a regular day with no calls (mobile network working, etc) but how would I check what is running in the background? Anyway to close out an app if I'm not using it?
[T-Mobile Samsung Galaxy S II SGH-T989] biccio:
Hi, I am new member..and I got the Amaze (I a here since I am seeking to solve my battery problems).

Maybe someone just noticed, but I know that if you put on the home page a shortcut to the battery page, the page you see about the battery is not refreshed.

To see the real page you have to go through Menu-> Settings-> Status-> Battery.

I don't know why, but anytime I was passing through the link it was steady while charging. Going to that page there was always a jump in the recharge (more in line to the real situation).

I still don't know why the same page gets stucked to 100% for a while signaling Awake time always on and screen always on, even passing through the settings.
[T-Mobile Samsung Galaxy S II SGH-T989] AlphaKoi:
this phone

seriously....read the OP people. This phone is a monster if you just do the things you need to get good battery life. I am a heavy user (phone, texts, web, apps, etc) and this phone EVEN IN STOCK FORM WITHOUT A GOOD KERNAL AND ROM (once rooted and bloat removed) gives me a ridiculous amount of time in between charges. Granted Im not playing dead space, watching youtube all day, or constantly syncing facebook to live vicariously...BUT i AM doing plenty of other things.

Ill even repeat the OP (and others) with the hints that help me at the risk of getting flamed. I apologize for the redundancy in advance.

*use wi-fi VS data whenever possible

*dont sync anything until you need it synced (turn background data off {accounts&sync})

*use darker colored screens more often

*battery calibration and training

*get rid of everything you dont need

*dont flood your phone with widgets

these basic principles I learned from MIUI *which we DESPERATELY NEED cough cough* and from searching other threads. I hope this helps and by the way....I LOVE THIS PHONE
[T-Mobile Samsung Galaxy S II SGH-T989] mettleh3d:
^ So you're syncing only when you choose to refresh your email?

What's battery calibration/training?

These are pretty restrictive rules, I mean, in a sense, why bother having getting a Lamborghini when we're only driving residential?
[T-Mobile Samsung Galaxy S II SGH-T989] azsl1326:
I am running SetCPU and have a profile set to run when the screen is off. I have the max set to 384 and the min to 192. I have noticed better battery results.

Hope this helps.
[T-Mobile Samsung Galaxy S II SGH-T989] floot_roops:
I'm also curious about battery calibration/training. What exactly is meant by this?

My understanding has been that Li-Ion batteries do not benefit from the type of discharges we used to do with old NiCad packs, and moreover, complete discharge is detrimental to a Li-Ion battery and should always be avoided (e.g. don't wait until your battery is completely discharged before recharging).

What procedure(s) do you all recommend with regards to "calibration/training" of our batteries?
[T-Mobile Samsung Galaxy S II SGH-T989] AlphaKoi:
Yes I only sync when I refresh my email or when I want to go on the market. Other than that....i dont. I wouldnt call that restrictive as much as selective and that is what works for me and the way I use the phone.

Battery calibrator is an app in the market that wipes your battery stats and helps train your battery (read here for more info). My version of battery training is using it until its down to 1/2%...full charge....calibrate....then repeat (read more here) (or where most of us start our learning). You are teaching it what its boundaries actually are & improving the life of the battery itself if done properly.

If the objective is better battery life

please note

I have well over 24 hours on a charge. I like your analogy...this phone is like driving a Lambo with all its power and beauty and yes you could drive full speed all the time. You could...but why would you. Youd just be driving from gas station to station. I just choose when to drive it fast and that saves gas.

I hope this has helped in some way. The intentions are good and Im just passing on what works for me. There are many threads and articles about battery calibration and especially battery training out there. When I crossed over to android from BB I spent a lot of time reading them to help my battery life. This is the cliffs notes of what I learned. I highly suggest to everyone.....do the same. Research and find what works best for you and how you use your phone.

Disclaimer : entire post IMO

I also use this and it definitely helps
[T-Mobile Samsung Galaxy S II SGH-T989] OrrinS1189:
Hughhh?

What am I doing wrong to deserve:

- Not being able to stay on 100% for more than 5 minutes after full notification?

WITH...

auto brightness (low)

only one sync... facebook every 4 hours.

no crazy apps.

an OFF screen?

I'm running the latest rooted rom.

I just got this phone and already calibrated.

Earlier today I went from 100% to 15% in SIX HOURS with it in my pocket. WIFO and BT off.
[T-Mobile Samsung Galaxy S II SGH-T989] azsl1326:
Get Where's My Droid Power from the Market and see what's sucking the power.
[T-Mobile Samsung Galaxy S II SGH-T989] KaneHusky:
Does T-Mobile's 4G use more power than its 3G? If so, is there a way to disable it and use only 3G speeds to save the battery?

(I'm still learning how all this GSM/CDMA/WCDMA and HSPA+ works)
[HTC EVO 3D] sumredhed567:
I live around that area in Virginia and the other day while playing with my 3d's 4G antenna I picked a very weak signal. I did a speed test and had about 2mps compared to the max 1.2mps for my 3G. From what I have been told (by sprint reps and other sources) the closest place with 4G is Richmond. Could this mean Sprints testing equipment? Has anyone else that lives around there seen similar results?
[XPERIA X10 General] _Sparks:
Hi does anyone know if there is a free or a cheap way to unlock the sim lock in xperia x10. I got xperia x10 this week but it is locked to Orange. Someone please help.
[XPERIA X10 General] Futura2000:
As far as i'm aware there isn't a free way to sim unlock it you'll after get it done with setool2 or another unlocking software which you after pay and its an instant unlock.
[Epic 4G Q&A, Help & Troubleshooting] Bfitz26:
so i have been looking for a theme to flash but cannot seem to find any nothing specified to the phoenix rom anyway does anyone have some links to a wiki or a few themes i can try out thanks in advance.
[Epic 4G Q&A, Help & Troubleshooting] djjroc007:
Honeycomb fusion explosion....ec05 version. Bad ass!
[Epic 4G Q&A, Help & Troubleshooting] Bfitz26:
does this work for random rom 2.2.1 as well as the frozen 1.2 cause i tried the honeyred cause i like red themes and my phone kept reseting and yes i wiped cache and dalvic cache 3x and then flashed and rebooted so.. yea
[Epic 4G Q&A, Help & Troubleshooting] Bfitz26:
i mean restarting not reseting...
[Epic 4G Q&A, Help & Troubleshooting] djjroc007:
Worked for me...
[Epic 4G Q&A, Help & Troubleshooting] djjroc007:
Btw...If you like red, the gears of war theme is pretty sick too!
[Epic 4G Q&A, Help & Troubleshooting] Bfitz26:
Is there any specific steps to get this to work would love to try gears of war I am running synicate frozen 1.2 thanks
[Epic 4G Q&A, Help & Troubleshooting] zanderman112:
Wipe cache/dalvik 3x, flash theme, reboot.
[Captivate Q&A, Help & Troubleshooting] mcala:
I used the "[AT&T][UCKB2]Heimdall One-Click -Total Stock- **now with or without root", everything passed but the phone just boots to recovery. That's all it does. It will not do anything else, if I hit reinstall packages it just gives me the "no such file or directory found", "E:signature verification failed". :confused:

EDIT: Using the rooted version throws me into the endless recovery. the "Non-Rooted" version works fine. Sorry for posting this here but new members not allowed to post in development section.
[Captivate Q&A, Help & Troubleshooting] mrhaley30705:
New members are allowed to READ in the development section. In fact, it's encouraged.
[Captivate Q&A, Help & Troubleshooting] mcala:
I did read the entire Heimdall One Click thread & found no one else with the same issue, thx. Phone is working now.
[EVO 4G Q&A, Help & Troubleshooting] robbiedew101:
I recently allowed my friend to borrow my HTC Evo to use as a GPS for his roadtrip. Upon his return, he told me that the phone had started to act "funny", and then all the icons disappeared. Turns out somehow he managed to do a wipe on the phone, and lost all my apps and information.

I had rooted my phone with UnRevoked and had no problems with it. After reinstalling all my apps, the Superuser Application keeps crashing every time a program asks for permission, or I attempt to open the program. I've already attempted to clear the programs memory, uninstall and reinstall, and wipe my phone again but continue to have problems. Could someone point me in the right direction to fix this issue?

Phone Information:

Hardware: 0004

Andriod 2.3.3

Baseband: 2.15.00.11.19

Kernel: 2.6.35.10-g13578ee

Build: 4.53.651.1

HBOOT: 2.10.0001

Radio: 2.15.00.11.19

Thank you!
[EVO 4G Q&A, Help & Troubleshooting] dzee206:
sounds like he updated su to the 3.04 version try and find an older version to see if that helps.
[EVO 4G Q&A, Help & Troubleshooting] HipKat:
Check in the General Evo section, I think it is, and look for the SU 3.0
[EVO 4G Q&A, Help & Troubleshooting] robbiedew101:
Great! Thank to you both, works perfect again!
[EVO 4G Q&A, Help & Troubleshooting] fitz420:
Here's a flashable older superuser that won't forceclose on u

http://db.tt/IjtipjeH