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[Q] No Data Connection, No or Unknown Signal Battery Drain

Hi i am having a big battery drain recently. My ROM is cm 10.1 20130304 galaxysmtd m2(stable) with stock cm kernel. I get 1% drain every 2 min with WiFi on, 3 to 4 minutes when using with out WiFi.
I checked better battery stats to search for battery draining apps and found that No Data Connection and No or Unknown Signal. See screen shots from below
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I have a good battery signal with -85 which is full bar signal and also I never use 3g or 2g mobile data since I already have WiFi connection. But these two battery drainer bothers me a lot. They wont sleep even idle or my phone enters deep sleep.
If you also have the same issue, kindly share it also here I can't be the only one having this issue. Hoping for some solutions coming
Sent from my GT-I9000 using xda app-developers app

I have the same issue with my i9000 after flashing CM9. My BetterBatteryStats stats are the same.
The battery drains very fast.
Did you figured out a solution for this?

finuccsi said:
I have the same issue with my i9000 after flashing CM9. My BetterBatteryStats stats are the same.
The battery drains very fast.
Did you figured out a solution for this?
Click to expand...
Click to collapse
I had the same problem this week. After half a day my battery was empty. I noticed that an application was using WiFi a lot. BetterBatteryStats couldn't give me enough information.
The problem was caused by K-9 mail. Accounts with IMAP settings made K-9 constantly polling. After changing it to POP3 the problem was solved. If you use K-9 mail, give it a go.

Me too!
I have this problem too, but I am not an expert with software, so someone please help us, I don't know how to solve this problem!

i had this problem mine is working again no data loss for a week .
what i did was flashed darky 10.2 re the went and flashed alliancerom jw4 then jw8 downloaded apn tweaker from google play store phone working normal again

lividor said:
Hi i am having a big battery drain recently. My ROM is cm 10.1 20130304 galaxysmtd m2(stable) with stock cm kernel. I get 1% drain every 2 min with WiFi on, 3 to 4 minutes when using with out WiFi.
I checked better battery stats to search for battery draining apps and found that No Data Connection and No or Unknown Signal. See screen shots from below
View attachment 1862035
I have a good battery signal with -85 which is full bar signal and also I never use 3g or 2g mobile data since I already have WiFi connection. But these two battery drainer bothers me a lot. They wont sleep even idle or my phone enters deep sleep.
If you also have the same issue, kindly share it also here I can't be the only one having this issue. Hoping for some solutions coming
Sent from my GT-I9000 using xda app-developers app
Click to expand...
Click to collapse
hey buddy, i'm with the same issues
Did you fixed it ?
My battery on usage drains so fast

as far as i observed if you turn on your data connection then it stops No Data Connection, No or Unknown Signal Battery.... i don't know why this is happening even if in aeroplane mode or wifi mode .. but that's the case... give a try and post your observation here

Battery issues

I think I have an issue with my battery, or possibly phone!
On my Galaxy S3 LTE I've been experiencing very poor battery life recently and have tried a few suggestions to improve it.
I have kept the screen brightness on -5, I have applied Power Saving Mode, disabled 4G mode (not using currently anyway) and installed a battery saver app (Internet Commander). However none of these seems to have made a difference!
As an example, here is my phone at 5.36 this morning on 71%. That is after I took it off a full charge at 11.30pm when I went to bed. So in Standby it had used 29% in around 6 hours. Then it just got worse through the day...
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At 3.23 I had just 8% battery left!! And that was after a top up charge of about 20% around 11am!! I had listened to half a dozen songs on the phone but thats it!
As you can see I do have data enabled, and just the standard apps installed (WhatsApp, KIK messenger, facebook, BBC Weather, Sky News, etc...). I also only have 1 widget on my home screens which is the BBC Weather app widget.
Could it just be a faulty battery? Would a faulty battery cause this kind of rapid decrease?

zim_zimmer said:
I think I have an issue with my battery, or possibly phone!
On my Galaxy S3 LTE I've been experiencing very poor battery life recently and have tried a few suggestions to improve it.
I have kept the screen brightness on -5, I have applied Power Saving Mode, disabled 4G mode (not using currently anyway) and installed a battery saver app (Internet Commander). However none of these seems to have made a difference!
As an example, here is my phone at 5.36 this morning on 71%. That is after I took it off a full charge at 11.30pm when I went to bed. So in Standby it had used 29% in around 6 hours. Then it just got worse through the day...
At 3.23 I had just 8% battery left!! And that was after a top up charge of about 20% around 11am!! I had listened to half a dozen songs on the phone but thats it!
As you can see I do have data enabled, and just the standard apps installed (WhatsApp, KIK messenger, facebook, BBC Weather, Sky News, etc...). I also only have 1 widget on my home screens which is the BBC Weather app widget.
Could it just be a faulty battery? Would a faulty battery cause this kind of rapid decrease?
Click to expand...
Click to collapse
I blame those battery intensive apps showing in your statusbar. Your battery is being used by Cell Standby, this is your Data connection being used to receive notifications. The fact that you have high Google Services percentages also points to this since it uses your wifi and radio to get your location periodically when set to do so. Start by disabling feature under location settings. Next, have a look at Android Device Manager in Google Settings, disable the location setting if you do not intend to use it. Anything that uses your Data, will cause more drain, especially on higher bands like HSPA.
Again, Whatsapp and Kik will constantly receive push notifications and sync, this also adds to your battery drain.

Thank you, I will try your suggestions

Hi, i had the Problem with huge batterx drain too. The battery didn't last much longer than 8 hours. My phone didn't go to deep sleep mode
I then installed wake lock detector and One Power Guard. In One Power Guard i aktivatet AI mode and now it looks like this:
Hope this helps
Gesendet von meinem GT-I9305 mit Tapatalk

Wifi battery drain on MM

Anyone having issues with wifi constantly destroying the battery even when off?
I've turned off wifi scanning and location mode is device only and yet when you look at battery stats wifi is still on.
Only fool proof way of turning it off is having all aforementioned settings in place and then disconnecting from wifi while I'm still connected instead of leaving it by moving out of range (leaving my house for example).
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Sent from my XT1254 using Tapatalk

Amerision said:
Anyone having issues with wifi constantly destroying the battery even when off?
I've turned off wifi scanning and location mode is device only and yet when you look at battery stats wifi is still on.
Only fool proof way of turning it off is having all aforementioned settings in place and then disconnecting from wifi while I'm still connected instead of leaving it by moving out of range (leaving my house for example).
View attachment 4005747
Sent from my XT1254 using Tapatalk
Click to expand...
Click to collapse
Am having the same issue... Nothing seems to fix it. I don't want to root and mess around with custom ROMs too.
Amerision said:
Anyone having issues with wifi constantly destroying the battery even when off?
I've turned off wifi scanning and location mode is device only and yet when you look at battery stats wifi is still on.
Only fool proof way of turning it off is having all aforementioned settings in place and then disconnecting from wifi while I'm still connected instead of leaving it by moving out of range (leaving my house for example).
View attachment 4005747
Sent from my XT1254 using Tapatalk
Click to expand...
Click to collapse
Sent from my Motorola Droid Turbo

Amerision said:
Anyone having issues with wifi constantly destroying the battery even when off?
I've turned off wifi scanning and location mode is device only and yet when you look at battery stats wifi is still on.
Only fool proof way of turning it off is having all aforementioned settings in place and then disconnecting from wifi while I'm still connected instead of leaving it by moving out of range (leaving my house for example).
View attachment 4005747
Sent from my XT1254 using Tapatalk
Click to expand...
Click to collapse
Hello, I hope I can help. I have the same issue the day after I received MM OTA, that wifi drained me more than 10% in the morning when I haven't done anything online.
I tried googling. In addition to location and scanning settings, there is one more you can try:
http://www.naldotech.com/having-problems-with-marshmallow-wifi-battery-drain-how-to-fix-it/
Now go to Settings > Backup And Reset > Network Settings Reset and reset settings.
Click to expand...
Click to collapse
The on screen instruction said I will lose all wifi settings, but turns out I don't need to enter the wifi and encryption keys again. I performed all these steps in one go and the problem disappeared the next day, so I don't really know which switch actually did the job. A week has passed, no more battery drain now and the battery usage is far better than I anticipated.
Hope this is helpful to you.

No dice my friend, still draining. I've disconnected from WiFi while in its range and am avoiding turning it back on and using 4G only
Wish someone would figure this out. Battery or WiFi is a pretty bad choice to be forced to make.

Amerision said:
No dice my friend, still draining. I've disconnected from WiFi while in its range and am avoiding turning it back on and using 4G only
Wish someone would figure this out. Battery or WiFi is a pretty bad choice to be forced to make.
Click to expand...
Click to collapse
Have you really tried reset network setting, as I quoted in my earlier reply, and reboot immediately? If this doesn't work, do you have time to do reset factory default? A complete factory reset can sometimes be the last way out. No guarantee though.

I was having the same problem + cell was getting hot too often. I did a factory reset and the 2 issues were solve. You might need to try that.

[Question/Discussion] Severe battery drain in PIE stock May and June

I bought this phone 2 weeks ago, and soon rooted it and installed May Update via Fastboot.
While I'm generally happy with this phone, there's serious battery drain issue due to a particular wakelock called IPCRTR_lpass_rx. While there are others like RILJ etc. they are still not that severe.
I've tried Wifi on + data off, both on, both off, Only Sim 1 activated, both sims activated.
After this, I even put my mobile on flight mode for a night and there was around 20% drain overnight. In my previous mobile Redmi 3S, there would hardly be 1% drain over night on flight mode and 3-4% if Wifi was on.
I was tracking these using BetterBatteryStats, however, while tracing the root cause, i even uninstalled BBS and used the system in-built bug report and analyzed it on battery historian to track the wakelocks and all.
Then came June update. I clean flashed through the unofficial fastboot, formatted data partition as well so as to leave no stone unturned. Again the same situation. A lot of battery drain.
Here are some reports -
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Please see the attached graph.
1. At around 6.30 PM (UTC) (graph times are in UTC) (12 AM IST) I kept my phone on flight mode at 50% battery and slept for 8 hours.
2. I woke up around 3.30 AM UTC (in the graph) (i.e, 9 AM IST) and checked my battery percentage. It was down to 30% from 50%.
3. Checked the main cause of wakeups, not much in Userspace wakelocks but massive amounts of kernel wakelocks from IPCRTR_lpass_rx. For the duration of this graph, there were over a million (2.3 x 10^6) wakelocks from this service, causing wakelocks every 2-3 seconds.
4. Even though phone went into full doze after some time, this wakelock continued.
Any suggestions on how to go about solving this?
Running June update, Rooted + cam2api enabled using Magisk patched boot img

Its been a month since i moved to a custom ROM, currently on Havoc OS 2.7
The severety of the bug is lesser than stock ROM, however, still quite random and causes battery drain and keeps CPU awake!
Check the wake sources, IPCRTR_lpass_rx is the number one wakelock with 10^6 wakelocks!! Thats way too huge in my opinion, and keeps my CPU awake.

At least i can prevent the wakelock to a large extent by turning off location, wifi (or both) in Havoc. It also doesn't occur during flight mode, or if it does sometimes, a restart usually solves the problem for me.
Ideally, even if i keep wifi on, battery should not drain more than 4-5% overnight (which was the case in all of my previous phones, and in my friends' phones other than Mi A2).

This is december now. And so far, the only problem i have with this device is the poor battery, intensified with software problems, poor modem and LPASS!!!
Its kind of frustrating for me.
Please see the screenshots and the attached bugreport.

rahulmanpur said:
This is december now. And so far, the only problem i have with this device is the poor battery, intensified with software problems, poor modem and LPASS!!!
Its kind of frustrating for me.
Please see the screenshots and the attached bugreport.
Click to expand...
Click to collapse
Well, i'm very satisfied with battery on this device. It could be better, but it's only 3000mah.
This ss was taken yesterday.

rahulmanpur said:
At least i can prevent the wakelock to a large extent by turning off location, wifi (or both) in Havoc. It also doesn't occur during flight mode, or if it does sometimes, a restart usually solves the problem for me.
Ideally, even if i keep wifi on, battery should not drain more than 4-5% overnight (which was the case in all of my previous phones, and in my friends' phones other than Mi A2).
Click to expand...
Click to collapse
Could you find what this Lpass wakelock mean? It occured 3720k times in 5 hours for me.
Unreal!

Question Pixel 7 Battery Drain in Phone Idle

I've been noticing huge battery drain on my Pixel 7 after the March update. No particular apps are draining the battery, phone idle alone does it.
I thought after the June update, it will make the battery backup better but I think it made it even worse. Last night I charged my phone to 100% and slept by turning off WiFi and mobile data. I even kept my network type to 3G to avoid background activities from 4G. And waking up after 5-6 hrs of sleep, I found my battery to be 89%. Screenshot is attached below. This is very disappointing. I bought this phone on February. It has not been a year and this is the performance I get from a flagship?
Clearly, this is not normal. Phone Idle draining 78%(of the 11% actual battery drain) of my phone's battery is crazy. I used to get 2 days of battery backup before that March update. And now I can hardly survive 16hrs. Please help me with a fix.
Notes:
Country: Bangladesh
I use dual SIM. 1 physical and 1 e-SIM.
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Factory reset, then be careful what you install.

You didn't use anything on the device though. The phone is idling more than doing any other task. So of course 78% of that small amount of battery drain is going to be due to the idle because idling is what is doing 78% of the time. I really don't see any issue here. I mean you only lost 11% battery over 4 hours and that first 15% drains quicker because lithium ion battery drain isn't linear. That first 10% always goes faster than the rest of the device. If it really bothers you, I would suggest changing the doze parameters to wear it disables the sensors on the device until it's unlocked.

Also, I just noticed that you have no mobile data on either SIM card. The phone is looking for a signal constantly and not getting it, that alone will drain battery, not to mention using dual sims has been known to affect battery life as well. Is the phone in airplane mode in that picture?

You aren't alone. I've been fighting the same issue with the battery drain since March. Up until the June update my excessive battery drain was showing as "Mobile network" but now it shows as "Phone idle". Strangely it drains the most when not in use. I've already done a factory reset and ended up with the exact same issue instantly.

It may be worth trying to disable the "adaptive connectivity" setting and see if that helps. I live in a weak 5g area and my phone was constantly switching between LTE and 5g causing signal drops and battery drain for me. I turned it off and it helped with both issues.
Settings, network & internet, scroll down to the bottom.

O.J. Simpson said:
It may be worth trying to disable the "adaptive connectivity" setting and see if that helps. I live in a weak 5g area and my phone was constantly switching between LTE and 5g causing signal drops and battery drain for me. I turned it off and it helped with both issues.
Settings, network & internet, scroll down to the bottom.
Click to expand...
Click to collapse
Tried almost everything except this one. I noticed this option was enabled on my phone. Turned it off today. Let's see how it goes. Thanks for suggestion!

Yeedatoy said:
Also, I just noticed that you have no mobile data on either SIM card. The phone is looking for a signal constantly and not getting it, that alone will drain battery, not to mention using dual sims has been known to affect battery life as well. Is the phone in airplane mode in that picture?
Click to expand...
Click to collapse
Not in airplane mode. I turned off Data then why would it constantly look for signal?

aadnan181 said:
Not in airplane mode. I turned off Data then why would it constantly look for signal?
Click to expand...
Click to collapse
I guess I should have asked first, I wasn't sure if you turned data off or not, I guess that's what led to the airplane mode. What about in developer options? Is mobile data always active still set to true?

Anyone with this issue my best suggestion would be use some kind of doze optimization mod. I know nap time is kind of outdated but some things still work correctly. I believe all of it does except for the GMS does magisk module. If you scroll all the way down to the bottom there's a setting that says wait for unlock. That keeps the phone in deep doze mode until you unlock the device, which also keeps the sensors turned off as well. Another option is diamond John's app Temefi. In the search box, type in doze, and you'll see a place where you can choose from several different Doze profiles. For this you need root, but if you're not rooted I would stick with nap time which just needs some ADB commands entered

i think it's a bug, i have no drain but look at the screenshot
"telefono inattivo" is phone idle, same percent but 1hr and more compared to yours, strange, indeed i've no drain
i always keep data, wifi and bluetooth on, since i work in a place where there's no 100% coverage of wifi, and bluetooth for smartwatch connection

have you tried safe mode?