Ok, so i just picked up a NS i9020t and i get less than 3 hrs of battery life. i though this was rediculous. luckily my old samsung phone takes the same battery.
a few things. 2 nights ago, i had a fully charged battery put it in airplane mode, less than 3.5 hrs later it was at 32% left. wtf?
with a fresh reboot fresh battery, same day, from 7am-930am the battery was dead, that was with very little anything. a bit of web search, email check and 10 minute call.
so today i installed juice defender ultimate, put in a fully charged battery, set the phone to extreme defend. this is what i got, in about 3.5 hrs
display 32% (really, like checking my phone 10x for texts, checking a few emails)
cell standby 19%
android system 18%
phone idle 6%
browser 6%
voice 6% (one 1minute phone call)
Juice defender 4%
anyone have any idea what the heck is draining my battery???
i am using this rom
1ada25375426.signed-soju-ota-189904.1ada2537.zip (which i think is the latest) and my kernal is, 2.6.35.7-gf5f63ef [email protected]#1
baseband version
I9020xxkf1
aslo, ever since i have gotten the phone, wifi/bluetooth hasnt worked.
any help would be amazing..
also, i noticed while flashing a rom with full battery when the new rom loaded, i went to red battery bars. something really strange is happening to my phone right now..
j
hmmmm ... i hate to say this , are you battery for real ? i mean it is not a fake one ?
try check it if has 1450 - 1500 mAh capacity
be honest with you , i have no idea ... since i brought second battery , i do not longer worry about this ****
--------------------
flash kernel is same as you flash ROM via RECOVERY , but be careful with kernel's instruction , some kernel is only for some ROM such as stock , and some kernel is universal , compatible to all ROM
Try oxygen from, should be a software issue
Sent from my Nexus S using XDA App
they are both genuine batteries, it would be a very rare instance, i bought both phones used, one locally, one from the usa. same issue with both batteries, i shall try oxygen..
try a stable rom without any apps.
All of the above and also try undervolting, which saves energy for longer battery life. UV made the biggest difference in this department on my Nexus S.
General tips for saving battery on any ROM is to lower the Brightness(I know,duh)
Turn OFF Location services! All of them! GPS and also location using wifi...
Your phone is acting very weird, try flashing a light ROM, maybe it is so that your Battery Stats is screwed up, try re-calibrating your battery using this app -- Battery Calibration
Never mind Juice Defender and App Killing Apps...
Wifi/Bluetooth not working with stock? That's not right :|
Flash a new ROM, that's the best advice I can give you I guess...
Related
Hi guys, I've got an LG Optimus One, and it seems like it's not having a good battery life, at least I believe, since this is the first smartphone I have.
So, I turned it on this morning at about 7:30am, got back home at 2:40pm and the battery is at 39%. If I get on the Battery Use screen, it says 42% Android System; 29% Display; 24% Cell Standby; 8% Phone Idle. That's all it says.
What did I do with the phone this morning: Checked out 1 web page like... 5 times during the morning, played Angry Birds for less than 10 minutes, took 4 photos and a 3 minutes video, checked twice the Bus time arrival... Played for 20 seconds a song at the max volume... And of course I looked at the time about 10 times. In total it is something like 30-40 minutes of usage out of 7 hours.
Is it really supposed to lose that much battery? What if I want to really use it? Will the battery drop in like 2 hours?
By the way, the LG Optimus One has got a 1500mAh battery, which to me seems to be quite good...
Try to condition the Battery, let the Battery drain completely, and then charge it up while its off. this way the life of the battery will improve, do it once a while
Diamond_dawg said:
Try to condition the Battery, let the Battery drain completely, and then charge it up while its off. this way the life of the battery will improve, do it once a while
Click to expand...
Click to collapse
I've already done it, just yesterday
Battery drain is affected by several factors:
- If you installed a cooked ROM you may want to try another
- If you are in a low signal zone that also drains a lot
- If you have a cooked ROM try also changing radio version
- Buy a spare one
orb3000 said:
Battery drain is affected by several factors:
- If you installed a cooked ROM you may want to try another
- If you are in a low signal zone that also drains a lot
- If you have a cooked ROM try also changing radio version
- Buy a spare one
Click to expand...
Click to collapse
Thanks for answering. I'm not using a custom ROM, and I've got 4 out of 5 lines of signal
I guess i'll buy an other battery, maybe the one from Mugen Power, with 300 more mAh, which is nice Thanks anyway
I am loving this rom, but also having HORRID battery life, I am literally dropping 10% every 90 minutes with an extended battery.
27% Cell Standbye
26% Bluetooth
19% Display
Now I keep reading that these might be false readings, but I keep reading this as a response to those having **** for battery life... so maybe they are not false?
Anyone having good battery life show readings like this? Those with bad battery life, what are your readings?
I'm running the CM7 w/the 2.5 radio - I'm in a 100% full time 4G area, but seem to have worse battery life when the 4G radio is on, so I just keep the phone on 3G - if I need the faster data I can always turn it on and off.
I'm running the stock kernal, no overclocking or setcpu type stuff going on.
Would like to hear from folks running this ROM w/killer battery life, what are your settings, tweaks, etc. Please specify if you're running an MR1 or Mr2/2.5 version and/or running the latest OTA 2 radio that just came out like yesterday.
I just turned off my FB sync (I forgot about that). I don't have gmail set up to sync automatically either.
I'm going to do this procedure a little later today and see if it helps, this is for the EVO, but, ya know....
34. "Calibrate" battery - (1) Turn device ON, charge it for 8 hours (or until LED turns green), (2) unplug and turn it OFF, plug it back in and charge for 1 hour (or until LED turns green), (3) unplug and turn it ON, wait 2 minutes, turn it OFF, plug it back in, and charge for 1 hour (or until LED turns green), (4) unplug it, turn it ON, and use normally.
Anybody else try this?
today will be my first full day of work use w/this ROM so we'll see what happens.
Best to keep 4g off if not using it. Also, turn Bluetooth off when not in use.
Sent from my ThunderBolt using Tapatalk
i had horrible battery life the first day - then it got better. then i flashed mr2 official and battery life is really solid. getting like 15-20 hrs with 4g always on, bluetooth on sometimes. one important thing is having a custom lighting table which i will post later.
Bassdj427 said:
Best to keep 4g off if not using it. Also, turn Bluetooth off when not in use.
Sent from my ThunderBolt using Tapatalk
Click to expand...
Click to collapse
I have never, nor do I intend to ever do this. I got an extended battery for a reason. I can go all day and then some on the official roms, and all of the Sense roms.
I am not new to CM7, I have run it on both an Eris, and an Incredible. Both devices got FAR better battery life on CM7.
I am not complaining about this rom, or Slayhers hard work. I simply want to gather information so that we may help him trouble shoot.
Immediate wiper batt stats at 100% this morning on my extended batter will report back with usage and level details
Sent from my ThunderBolt using XDA App
stayin100 said:
Immediate wiper batt stats at 100% this morning on my extended batter will report back with usage and level details
Sent from my ThunderBolt using XDA App
Click to expand...
Click to collapse
This is exactly what I did lol, I had lost 10% in the first 90 minutes, now I am at 58% at 5 hours. I have been streaming google music for 2 hours of that 5 though. I would guess I should have seen an increase in battery usage, but have not.
The battery readings are wrong, I get a full day on 4G with my stock battery and see those numbers for cell standby etc. I use lean kernel though
Sent from my ThunderBolt using XDA Premium App
do you see those numbers for BLUE TOOTH though? We know good and well some numbers are fake, but that does not mean all.
FYI I am now at 37% and 7 hours and 7 minutes... I have not used google music since the last post and I am seeing the exact same battery drain as when I was using it.
I have absolutely horrible battery life when I'm at work (which is basically a bunker). On a normal day, my battery will be dead within 6 hours just sitting there on my desk.
However, when I am at home (great 4G signal), I see my device getting upwards of 16 hours with moderate use.
I will also say that since I upgraded to the most recent radio, I have been having much better battery life at home. Additionally, my phone has stayed much cooler with the most recent RC + new radio combination.
I heard if you change the render fx to n1 calibrated, then you will get like 1 hour extra of battery life. You can change the render fx by going to cyanogenmod settings.
11h32m11s on extended battery 69% left
The other numbers have to be wrong. Theres no way cell standby is the number one battery user.
my cell standby is also showing 30% with the new OTA 2 radio.
I switched to dream kernel (have not wiped battery stats) and am now at 88% after two hours, that puts me at 6% per hour verses yesterdays 10.
_Viper_ said:
I heard if you change the render fx to n1 calibrated, then you will get like 1 hour extra of battery life. You can change the render fx by going to cyanogenmod settings.
Click to expand...
Click to collapse
only works for AMOLED screens.
edit: to be clear, it only saves battery on AMOLED.
so what i have found is that after installing dream kernel and messing with the governor settings... along with being connected to wifi. my battery life has improved tremendously. i wiped battery stats this morning after a full charge and didnt notice any change.. then i flashed the kernel and messed with gov. settings... after rebooting ive noticed a huge huge difference.. just my 2 cents for anyone who had battery issues like me
Yesterday I was able to choke out 20 hours while in a 4G area the entire time.
Running RC 1.2, Imoseyon's leanKernel extreme mode (extremely undervolted and OCd to 1.4GHz) and using the InteractiveX governor.
Also, I just happened to reboot and surprisingly it only took away 1% of my battery. Amazing considering whenever I did that on a Sense ROM, I'd experience a battery loss ranging from 7%-10%.
beeholtz said:
so what i have found is that after installing dream kernel and messing with the governor settings... along with being connected to wifi. my battery life has improved tremendously. i wiped battery stats this morning after a full charge and didnt notice any change.. then i flashed the kernel and messed with gov. settings... after rebooting ive noticed a huge huge difference.. just my 2 cents for anyone who had battery issues like me
Click to expand...
Click to collapse
What settings did you land on as best?
cpu is set max to 368 mhz(very low) but i can crank it up if im doing somethign like playing games or downloading and want speed. brightness is at about 15-20 percent. the dream kernel and mr2.0 radio have made a big diff too. the dream kernel made the biggest. usually when id power off or reboot id lose 6-10 percent same as someone else i saw post. now i lose maybe 1 percent which is a huuuuge difference considering you lose 10 percent just because you reboot. also i try to stay on wifi wherever i go. on 3g i def notice it drain quicker, but i am no expert and there are a lot of people on here who by far outexperience and outknowledge me(my new 2 words) so im sure other people have some suggestions
Morkai Almandragon said:
I am loving this rom, but also having HORRID battery life, I am literally dropping 10% every 90 minutes with an extended battery.
27% Cell Standbye
26% Bluetooth
19% Display
Now I keep reading that these might be false readings, but I keep reading this as a response to those having **** for battery life... so maybe they are not false?
Anyone having good battery life show readings like this? Those with bad battery life, what are your readings?
Click to expand...
Click to collapse
That is strange I am also using CM7 with an extended battery and still have 41% left after 14:56 on battery.
battery use does show
cell standby 31%
phone idle 19%
android system 19%
wifi 11%
dialer 10%
display 6%
voice calls 3%
I've searched about a million times in 900 different threads, but I still can't find a fix to this issue.
I first noticed this when I flashed MIUI onto my phone. I would get cell standby and cell idle at about 40-50% of battery usage each. Display wouldn't even be shown on the usage! I then figured MIUI wasn't worth it to me, so I flashed CM7. I tried both morfic's and faux's many kernels, nothing seemed to fix the issue. If I would turn the airplane mode on, I'd get battery drain of only like 2%/hour.
So I figured there was something wrong with the CM7 port, so I tried g2xtreme and other GB ROMs, same thing. Finally, I just checked a froyo ROM, same thing again!
So at this point I'm clueless and thinking the phone is completely a POS, but anyways. I'm about to nandroid restore stock 2.2 firmware, and try updating through the LG Mobile Support Tool.
But I have my doubts that this will fix it. I'm curious though if maybe I'm getting this drain because I'm with WIND Mobile in Canada? And this is for the T-Mobile G2X (they're the same phone and both companies use the same radio frequencies). But maybe there's something written in these ROMs to tell the phone to look for the T-Mobile network? Which I obviously won't be able to find in Canada.
Can someone help me locate these settings, if they exist? Or can someone with a Wind phone maybe toss me the WIND stock firmware? Or let me know what ROM they're using without said issue?
Thanks guys!
Edit:: In low signal areas the phone drains like 15-20% per hour, in high signal areas the phone is still pulling like 8%-10% an hour and I'm not even using it! And the weird thing is it only shows 1% time without signal! Something is seriously wrong with this firmware.
Search for betterbatterystats on XDA, install it, enable battery monitoring in MIUI (if that's your daily rom), leave your phone alone for a few hours, then open BBS and look at the partial wakelocks under "since unplugged." There you'll see what's killing your battery.
Everyone experiences worse battery life when reception is bad, but you are still getting terrible drainage in good areas, which means there's something other than reception killing your battery.
erikikaz said:
Search for betterbatterystats on XDA, install it, enable battery monitoring in MIUI (if that's your daily rom), leave your phone alone for a few hours, then open BBS and look at the partial wakelocks under "since unplugged." There you'll see what's killing your battery.
Everyone experiences worse battery life when reception is bad, but you are still getting terrible drainage in good areas, which means there's something other than reception killing your battery.
Click to expand...
Click to collapse
I tried that before, and had a crapload of apps "frozen" with titanium backup.
I'm going to try this again, and I'll post a screenshot this time because I don't think I actually understood what betterbattery stats was trying to tell me last time.
If anyone can help me decode it later that would be great!
Just noticed that there's barely anything under partial wakelock that's noticeable.. RIJL Telephony is the highest with 1m 1s 15%.
But it's not increasing very much, only when I get a text message. However, I've dropped about 7% since my last message, and cell standby is increasing climbing up my battery usage from 33% to 42%. It went from 620uah to 657uah.
Edit:: I reset battery stats cause I was unsure if it was corrupted stats. I started at 17% 40 minutes later I'm at 12%. Phone was off 90% of the time. I made a 2.5 minute call and it used 41uah, while cell standby still dominated with 65uah.
However, I turned my phone on for 5 minutes, making total usage 45 minutes, but had the brightness set to max, and in that five minutes it only used 1uah.
Am I missing something here? At this point I don't know if my numbers are normal or not anymore... I'm going to try draining the battery, charging to full, wiping battery stats, and calibrating and see what happens but 65uah to 1uah is a huge difference, I would've thought display would use a bit more than that.
I noticed this morning that having the phone with airplane mode OFF, that my battery dropped 10% in 57 minutes, and after turning the airplane mode ON, the battery dropped 1% in the next hour and 30 minutes. I checked battery stats and nothing was waking up my phone. Anyone have any other suggestions?
I'm going to flash miui and leave it without any apps installed then try this experiment again.
Sent from my Flashback HC-TAB using XDA Forum App
I find these threads interesting because I am always looking for better battery life.
I am running EB 2.3.3
I uninstalled Set CPU and uninstalled Juice Defender. From my experience both hurt my battery life.
I never bothered to measure in airplane mode, because i use my phone to much.
My battery life improved dramatically during stand-by. 1% to 2% drop per hour with wifi on and a slightly bigger drop with wifi off.
I completely wiped the phone before installing EB and the used Titanium Backup to reinstall my apps without the data. I believe some of my previous battery life issues came from restoring data from certain apps.
I have the same phone/carrier. Do you leave 3G turned on? I feel it rapes my battery throughout the day. When I turned it off, it lasts pretty long.
Another problem I have though, is the drain when it is OFF. I went to bed with it at 90% juice and turned it off. I woke up 8 hours later, and it was at 65% when I turned it on. wtf. This only happens sometimes thou.. Other times it doesn't drop too much.
aceofserenity said:
I have the same phone/carrier. Do you leave 3G turned on? I feel it rapes my battery throughout the day. When I turned it off, it lasts pretty long.
Another problem I have though, is the drain when it is OFF. I went to bed with it at 90% juice and turned it off. I woke up 8 hours later, and it was at 65% when I turned it on. wtf. This only happens sometimes thou.. Other times it doesn't drop too much.
Click to expand...
Click to collapse
I experience the exact same issue. But for some reason my battery life is more or less the same with 3g off. So I feel like my phone is constantly searching for a different signal or something? I mean if airplane mode affects my battery life that drastically reducing consumption by like 9%/hour then there must be something up
Sent from my LG-P999
Everyone who's been telling my phone is not sleeping is correct.
Only program is is that my phone's battery stats doesn't say which app is waking the phone? It lists Telephony as #1 with 1m 1s of awake time, and everything else is minuscule. There's gotta be something the phone isn't telling me :S Could it possibly be a hardware issue?
Or is there a better way I can narrow down this issue? I'm in the process of removing all apps.
Just curious, did you 'train' your battery?
aceofserenity said:
Just curious, did you 'train' your battery?
Click to expand...
Click to collapse
Nope, but it's Li-Ion and my impression was these do not need to be trained.
I just emptied it to complete 0 yesterday, and charged it to complete 100% then calibrated it. Today though it was still horrible battery life until I completely wiped and flashed MIUI 1.9.23 then Trinity kernel brand new. I'm installing apps 1 by 1 to see which one caused me so much darn grief :S
All batteries are Li-ion nowadays, but I still feel after 'training' my battery for a week, they last substantially longer than new ones, fresh out the plastic.
aceofserenity said:
All batteries are Li-ion nowadays, but I still feel after 'training' my battery for a week, they last substantially longer than new ones, fresh out the plastic.
Click to expand...
Click to collapse
I did end up conditioning it, not sure if it helped or if it was cause I flashed a new rom, but everything is finally working in order now
Sent from my Flashback HC-TAB using XDA Forum App
Battery drain fixed?
aceofserenity said:
Battery drain fixed?
Click to expand...
Click to collapse
Yes, battery drain is fixed. Also, I was on a completely different baseband for some reason, I was on the o2x baseband, fixed that JUST now, I think that was a part of the reason I was draining my battery like instantly. It was probably looking for a GSM signal!
Thank you for all your help
A simple *#*#4636#*#* can change that.
aceofserenity said:
A simple *#*#4636#*#* can change that.
Click to expand...
Click to collapse
Yeah I set it to WCDMA Only. Battery life has been awesome lately.
Hi everyone, might of had this before but everyones seems to be a little different
I have the Galaxy i5800, (Galaxy 3/Apollo) and it was always fantastic, battery life, lag-free for the whole year i've had it.
I am running the Kyrillos' rom v10.6 which is CM7.2 based.
Since a few weeks ago, the battery has just been draining, like a hour of battery life even just in sleep mode, i have wiped Battery Stats, Cache (partition and the dalvik one), Factory Reset, pretty much everything in recovery mode. charged battery for 6-9 hours overnight from 0%. no difference, will still just drain drain drain.
Also, if you use the phone for a good 5 - 10 minutes doing for instance browsing the internet (Opera Mini) the phone will just turn off instantly (possible overheating CPU?)
I am not using GPS Wi-Fi, sometimes not even data network (3G). i don't understand how the battery is draining so fast, i have tried stock
2.1 and 2.2 roms and the same thing happened with those.
is it a problem with the phone (CPU or whatever) or the actual battery?
Sorry for the ramble but just wondered if the good lads on XDA could help! Thanks.
I too had the same issue,its due to your battery perhaps I changed my battery and now battery life is great(by great I mean 3 days approx)
Sent from my GT-I5801 using xda app-developers app
me too, help
i using CM7.2...this error: (
i've just bought a new charger and battery, the charger has already come, and for some reason battery has already increased haha!
got them both for under ten pounds altogether from amazon, really pleased with that
also flashed the phone back to stock 2.2 JPU firmware! can't complain really, might root it at some point but not too sure as i'm getting a nexus 4 when come back in stock!!
i will just use this phone as a backup phone or phone for download festival !
That may be a problem of battery as I changed by battery to a new one then it works awsm.....
From my awsm Galaxy 3.....
sounds like a problem with the battery.
it happened to me because of overflashing during development work.
replacing battery worked awesome!!
the battery is pulling out 1.5 to 2 days with wifi on half of the time
Hi folks,
since some days my battery drives me crazy...
Last week i flashed CM10 by nk111. Nice ROM, but my battery lasted only for some hours with normal usage. So I went back to MIUI...problem stayed.
Yesterday I flashed Jellytime and replaced the battery. The problem stayed as well. At 6 pm battery was full, I restored my apps with Titanium, used it a bit and when I was going to bed at 10 p.m. battery was 81%. Getting up at 5:30 this morning --> battery was 41%.
After the battery was full yesterday night I used display for maybe 10 minutes, why there are 36% battery usage by th display?
WTF happened to my system by flashing CM10 by nk111???
Any help is appreciated!
PS:
Baseband-Version: 20.72.30.0833U_3831.17.00.310
Kernel-Version: 3.0.50-g6ea80e4
First, do you have Google now on. It really drains the battery. If that doesn't help install better battery stats and let it go through a couple of cycles, it will help you pinpoint if any apps or wakelocks are draining your battery.
“Microsoft is not the answer. Microsoft is the question. NO is the answer.” – Erik Naggum
I don't use Google Now. I use the same apps withe the same intensity than in better battery times...
Could you please give me a recommendation for a battery stats tool?
Thanks!
flsch said:
I don't use Google Now. I use the same apps withe the same intensity than in better battery times...
Could you please give me a recommendation for a battery stats tool?
Thanks!
Click to expand...
Click to collapse
Use the search, you'll find it in both xda and playstore it's called better battery stats
“Microsoft is not the answer. Microsoft is the question. NO is the answer.” – Erik Naggum
U have an app or something that is running when screen is off.
Find the app and del it.
Sent from the DesiredS
app called carat could also help you find the battery sucking thing. It's a bit more simple than battery stats, you'll like it if you're not an expert.
it doesn't need to be a new app that is sucking power, it could be the poorly made update of some app that you're using for a long time.
I installed both apps.
But in both I can't find any kind of statistics about consumed power by apps or something similar, am I that stupid?
flsch said:
I installed both apps.
But in both I can't find any kind of statistics about consumed power by apps or something similar, am I that stupid?
Click to expand...
Click to collapse
Bbs needs to run for at least a full battery cycle to give you a clear picture, if recommend running it for at least a day
“Microsoft is not the answer. Microsoft is the question. NO is the answer.” – Erik Naggum
I get max 24 hours battery life , sometimes 12 hours , so it's not something to worry. If you speak 2-3 hours and WiFi on another 2-3 hours that is the battery în my case 12 hours max.
Sent from my HTC Desire S using Tapatalk 2
spavian said:
I get max 24 hours battery life , sometimes 12 hours , so it's not something to worry. If you speak 2-3 hours and WiFi on another 2-3 hours that is the battery în my case 12 hours max.
Sent from my HTC Desire S using Tapatalk 2
Click to expand...
Click to collapse
IT IS something to worry, cause battery behaviour changed dramatically while I didn't change my usage of the phone.
40% battery loss over night should be a clear indication of abnormal behaviour.
@jugg1es: thanks for the advice!
flsch said:
I installed both apps.
But in both I can't find any kind of statistics about consumed power by apps or something similar, am I that stupid?
Click to expand...
Click to collapse
you must run carot a day or two, than it will display some apps on the first page and the approximate battery life you get if you kill them. read the manual also..
Yesterday in the evening I realized a 96% entry in the Partial Wavelocks section - AndroidMediaScanner. I freezed it (I know where my pictures and music is located...), did a full load on the battery and for 4 hours the battery remained at 100%. I really thought the problem is solved...but in the morning...31%
But - the 'Media' entry in the android accu stats is gone, I think this is a partial success.
In the BBS app, there is no remarkable value - the biggest is 3,8%.
When I watch the graphs - WiFi and Awake is nearly completetly blue over the whole night (unfortunately, I can't take screenshots right now for any reason).
I'm a bit helpless right now, will charge the phone now and keep an eye on BBS the next hours/days.
androidmediascanner shouldn't be the bad guy, it's a system app that we all have. maybe your battery is the problem...
toxic-hero said:
androidmediascanner shouldn't be the bad guy, it's a system app that we all have. maybe your battery is the problem...
Click to expand...
Click to collapse
I inserted a new battery last week without any change. Don't think both batteries are broken.
The common way to solve this is to do a fresh install. Leave it for a day without any apps yo see if it is ROM related. See if the battery life improve. Install one app per day and monitor your phone awake period with screen on, it should be almost same.
Sent from the DesiredS
Yesterday night I made a full wipe, installed Jellytime and Gapps and went to sleep...
In the morning --> 67%.
Very odd, normally this would probably indicating a defect battery, but it is new!
Maybe a hardware defect?
Maybe RRU Problem?
Hi,
I have a similar problem here. I was using the desire s for a long timne with stock rom (2.x android), a full battery was enough for ~2 days. Then I rooted the device and installed CM10 (NK111 alpha build).
2 things changed:
The battery is empty after 24h or less.
The wireless network is worse than before. This is my subjective impression but there are places at home or in the office where wifi worked before and stopped working.
I'm starting excessive tests (disabling everything, removing apps, running carat) during xmas holidays to find the reason.
My guess what it might be: to root the device I did a downgrade, including a radio downgrade. Now I run baseband 20.23.30.0802U_38.02.01.11 which is known as "Saga Test RUU" and has the lowest version number of the RRUs listed in the forum. I did not found anything about this in the forum or with google but maybe this is the reason.
My average battery stats with normal use (whole day, used the phone a few minutes):
~30% Display
~25% Wifi
~17% Mobile Standby
~5% Android Os
For comparison, my Motorola Defy has in a similar scenario ~5% Wifi and ~3% Mobile Standby