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Aaditya4u
Asteroid

Samsung note 9 Battery drain issue

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My battery drains faster than it should. Lasts only 14 hours after fully charged. Bought from tmobile store  did cleaning cache and reset but still same issue I facing. If anyone knows please help.

<a href="https://ibb.co/kj7h4z"><img src="https://preview.ibb.co/jMypjz/Screenshot_20180921_205020_Settings.jpg" alt="Screenshot_20180921_205020_Settings" border="0"></a>
<a href="https://ibb.co/hsWs4z"><img src="https://preview.ibb.co/h0Eqre/Screenshot_20180921_205025_Settings.jpg" alt="Screenshot_20180921_205025_Settings" border="0"></a>
1 SOLUTION

Accepted Solutions
Aaditya4u
Asteroid

Re: Samsung note 9 Battery drain issue

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Turned out McAfee antivirus is draining battery. I tuned off and my battery lasts for 22 hrs now.

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104 REPLIES 104
KushDaddy420
Constellation

Re: Samsung note 9 Battery drain issue

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Same here with sprint model. With wifi, bluetooth, locations, sync and basically everything off.

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user36CaIHevCx
Astronaut

Re: Samsung note 9 Battery drain issue

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my note 9 is giving me SOT of 3hr only, mainly the battery drains on standby, my usage involves WhatsApp, emails and calling although wifi, location and cellular data is always on.

 

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userx3NQz49N94
Constellation

Re: Samsung note 9 Battery drain issue

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Hi, I have been experiencing same issue after updating to One UI in my S9+, I tried many solutions from the web, but noen of them worked. So what I did is just backed up my data and factory reset my phone, and after taht everything is back to normal--my phone is back to life again with same battery history usage as usual....So what I realised the problem is, that imagine a 1960s car which you put a new set of All terrain tires, but no balance them at all, the car wont be as good as before, in fact will be worst than prior to install the new tires. After you balence the tires, the car should run smothly as new, the same happens with the phone, after the new operating system update, you need to Reset the phone as factory new, then everything will be alright. Hope it helps your problem.

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sygys
Constellation

Re: Samsung note 9 Battery drain issue

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Battery drain is on purpose by Samsung. After a new flagship is announced you will receive updates involving the reduction of capacity. This is purely done to move customers to newer versions. They removed the ability to turn off updates so there is basically nothing you can do about it... just live with it.

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userxhrvOGxFLu
Constellation

Re: Samsung note 9 Battery drain issue

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Okay, I want to share my experience with my Note 9 battery drain.. I bought this from a friend and has a horrible battery.. I searched everywhere but just can't find the answer, this thread says disable McAfee, but McAfee is never turned on on my Note 9, so I will give my tips here for battery improvements.. Forget about power mode, it doesn't work..

 

1. Maybe diasbling McAfee works, so disable McAfee in the Settings -> Device Care -> Security

2. Disable always listening Bixby, go to Bixby -> Settings -> Automatic Listening swith to never and Voice wake-up to Off. (This will guarantee 30% improvement of your battery)

3. Disable Facebook using Greenify (you can use other apps, I only know this). Buy the donation pack so you can greenify hidden system apps. Greenify Facebook in the hidden system app, you just need to do it once and they never turns on again. Disable 4 Facebook hidden system app (This will guarantee another 30% improvement of the battery life)

4. (Optional) Greenify other apps that you don't think they need to run in the background

 

I tested each steps for a week then jumping to another steps to see the difference, I really can feel the difference.. I'm always searching new ways to improve battery, give out more tips when I found new ones, peace,

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uservUGlc9WAOv
Constellation

Re: Samsung note 9 Battery drain issue

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Download thr Power battery app on Google Play store and enable all permissions. Went from having 12 hrs of battery time, to 31 hrs on average it is a blessing and helps keep the phone clean and cool

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userAg6WitffA7
Cosmic Ray

Re: Samsung note 9 Battery drain issue

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For some odd reason At&t called me to ask if I have been having internet connection problems in my area. Long story short I told them about the battery drain issue. They ran some tests and said it had to be a bad battery that was causing the drain. They overnighted me a new phone. I made a new gmail when booting up this phone and didn't just re-upload everything from the previous one. The battery still drains fast. I sat both phone next to each other. With no activity my old one dropped almost 30% in 2 hours. The new one only 17%. I have currently had the phone off the charger for 2 hours right now and its dropped 11%. Better than before but no where near what they say. I have it in power save mode, I have the always on Display off. I have refarined from downloading any social media apps. I think it was some major false advertising saying the battery lasts as long as it does, which is the only reason I chose this phone.  But at least its not going down as fast as before. 

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sygys
Constellation

Re: Samsung note 9 Battery drain issue

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My battery uses 1 - 2% per hour when not using it. There must be running something that is causing the drain... I'm never on wifi always on 4g with bluetooth on and every synching on push. My battery drains fast when using it. But in standby it almost uses nothing. You should test without a sim card and purely on wifi. It could also be a faulty sim card


@userAg6WitffA7 wrote:

For some odd reason At&t called me to ask if I have been having internet connection problems in my area. Long story short I told them about the battery drain issue. They ran some tests and said it had to be a bad battery that was causing the drain. They overnighted me a new phone. I made a new gmail when booting up this phone and didn't just re-upload everything from the previous one. The battery still drains fast. I sat both phone next to each other. With no activity my old one dropped almost 30% in 2 hours. The new one only 17%. I have currently had the phone off the charger for 2 hours right now and its dropped 11%. Better than before but no where near what they say. I have it in power save mode, I have the always on Display off. I have refarined from downloading any social media apps. I think it was some major false advertising saying the battery lasts as long as it does, which is the only reason I chose this phone.  But at least its not going down as fast as before. 


 

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userGFov7Ck7e5
Constellation

Re: Samsung note 9 Battery drain issue

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How'd u fix it?

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