[Q] 4.1.2 battery drain

simsing · Jan 23, 2013

Hi!

So I have updated my unrooted Note 2 to version 4.1.2 and below describes what happened:

1. Battery drain very fast, can't even last 24 hours. The battery details show "Android System" chugging all my battery juices.

2. On 2nd day, I tried "Factory reset" on Settings menu but still my battery drains very fast by "Android System".

3. On 4th day, I installed Kies on my PC and did the "Firmware Upgrade and Initialization". Noticed an improvement in battery life but after 4 hours, I noticed "Android OS" is now taking his turn to chug all my battery juices.

4. On 5th day, woke up and noticed battery drained >20% by "Android OS".

5. 6th day (today), I did another "Firmware Upgrade and Initialization" on Kies and now I noticed "Android System" took over and took over >29% battery usage in under 1 hour.

6. Now, I am running "Firmware Upgrade and Initilization" for the 3rd time and is hoping for the best.

Question:
Should I root my device and downgrade to 4.1.1? Before update to 4.1.2, it can last almost 2 days.

Thanks for your help!!

Dmwitz · Jan 23, 2013

I had a similar problem and discovered that "gpsd" on my phone was causing the drain. This system also required other systems whiqh together used about 45% of the battery. The "gpsd" is the system samsung uses to track your phone (if you have enabed it). It did not cause this drain on my phone prior to the update.
I hope this helps.

simsing · Jan 23, 2013

Thanks...

Dmwitz said:
I had a similar problem and discovered that "gpsd" on my phone was causing the drain. This system also required other systems whiqh together used about 45% of the battery. The "gpsd" is the system samsung uses to track your phone (if you have enabed it). It did not cause this drain on my phone prior to the update.
I hope this helps.

Hey thanks for your input. Would you be able to explain in more details on how to disable this "gpsd" thing you mentioned?

I would like to try it out myself

fade2black101 · Jan 23, 2013

I disabled all samsung apps, and several others including google now and location services.

Still a massive battery drain.

Very annoying..

bawffg85 · Jan 23, 2013

it is said 4.12 drain faster than 4.1.1

fade2black101 · Jan 23, 2013

bawffg85 said:
it is said 4.12 drain faster than 4.1.1

Much much faster

I hope Samsung fix this issue, and quick! I don't like my phone losing a minimum of 20% overnight.

EarlZ · Jan 23, 2013

I have no battery drain issues (yet) on the 4.1.2 could be just the vocal minority experiencing it or idk.

fade2black101 · Jan 24, 2013

EarlZ said:
I have no battery drain issues (yet) on the 4.1.2 could be just the vocal minority experiencing it or idk.

How much battery do you lose overnight?

HypoDest · Jan 24, 2013

EarlZ said:
I have no battery drain issues (yet) on the 4.1.2 could be just the vocal minority experiencing it or idk.

On average I also don't observe a significant overall battery drain. Am currently projecting about 7-8 hours of screen time which is about the same as with before. Also having the same very low overnight drain.

However a few oddities:
Android system is higher on the battery charts than in 4.1.1.
I was playing nfs_mw before and after the update, and there is a significant increase in battery drain in 4.1.2. A full battery used to give over 4 hours of gametime, now gives just over 1 hour.

I've also not seem anyone else mentioning this and I'm not sure if this is related to battery but:
4.1.2 is absolutely perfect butter smooth
Every animation and transition had been completely fluid and going from 4.1.1 to 4.1.2 was like upgrading from 50% to 100% project butter.

Sent from my GT-N7100

EP2008 · Jan 24, 2013

HypoDest said:
I was playing nfs_mw before and after the update, and there is a significant increase in battery drain in 4.1.2. A full battery used to give over 4 hours of gametime, now gives just over 1 hour.

Sent from my GT-N7100

That's brutal. Were you able to confirm this over several days of gameplay ? Can you post screenshots of your battery stats screen?

fikthor · Jan 24, 2013

fade2black101 said:
How much battery do you lose overnight?

Mine after upgrade to 4.1.2 took 7,5 hours during night to drain battery to 89%...

On 4.1.1 it was about 3 - 4%. I'm downgrading...

nabilsweet007 · Jan 24, 2013

emotion rom 2.0 is the solution

sprkrt · Jan 24, 2013

nabilsweet007 said:
emotion rom 2.0 is the solution

why is that?

fade2black101 · Jan 24, 2013

I have downgraded but version 4.1.1 doesn't give me the option to switch to 2G only data mode!! Only 2G/3G/4G or 3G only!

This is essential as where I live my 3G keeps cutting out, and I get frequent loss of service. Is there any way to get this option back???

EarlZ · Jan 24, 2013

Roughly about 1% per 7-8hours depending on the current battery level, are you losing more ?

sz1a · Jan 24, 2013

I downgraded to 4.1.1 by downloading the appropriate firmware from sammobile.com and flashing as pda with odin. I then flashed the perseus kernel which has the sudden death bug fix built in. Perseus is not prerooted but it doesn't have to be, at least it protects the phone from sudden death as I had the faulty chip in mine. I got 40 hours standby and 4 hours screen on out of it now, all accounts syncing with Google now and Samsung tracking service. happy to have switched back to 4.1.1, all I miss is the snappier s note from 4.1.2.

Sent from my GT-N7100 using xda app-developers app

hannarecord · Jan 24, 2013

Hello guys I have this problem also In my note 2 after updating to 4.1.2 my battery drain like 10% for 20 min in idle
Factory reset dosen't solve the problem
I just wipe data and cache from recovery mode beleive me now its better than before I am using it for 1 day 14 hours I still have 49% on heavy usage with H+ connection
Sent from my GT-N8000 using xda premium

simsing · Jan 24, 2013

Hope it get fixed soon...

Last night I disabled "Google Location Services". It is under Settings > Accounts > Google > Location Settings

This is what I noticed.

Before I sleep, after I finished charging at 16min my Android Services spiked up almost 50%...

When I woke up, this is what I saw... 9% total drain and Android Services went up to 54%...

Not too bad comparing to a few days ago when I first updated.

So is there anything I can do without needing to root my phone?

Thanks!

samnote2 · Jan 25, 2013

hannarecord said:
Hello guys I have this problem also In my note 2 after updating to 4.1.2 my battery drain like 10% for 20 min in idle
Factory reset dosen't solve the problem
I just wipe data and cache from recovery mode beleive me now its better than before I am using it for 1 day 14 hours I still have 49% on heavy usage with H+ connection
Sent from my GT-N8000 using xda premium

I have the same problem like You

MarionCast · Jan 25, 2013

Can confirm this issue. Used to get 5-6 hours screen on time on 4.1.1 on a normal day (moderate to heavy usage).

Now I can't even reach 3 hours on 4.1.2. I already did a hard reset. No change.

Can installing a custom ROM solve this?

[Q] 4.1.2 battery drain

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