[Galaxy S25 Series] How to fix Knox Matrix draining battery and overheating phone

[Sergio_Blanco]

Knox Matrix is draining the battery and overheating the phone. Impossible to work that way. I hope that Samsung publish an update soon to fix this. I'm concerned that the battery can start expanding or leaking because it is to hot and i need to keep the phone charging to go thru my work shift. Really bad situation...

[userEldi0d61zF]

I cannot use the Health app and my battery is drained.

[LongHiker]

@userEldi0d61zF Did you wipe the device cache partition after the update? I recommend that you do this after every device update. It wipes out incompatible or outdated cache information which might be incompatible after the update. It does not erase any user data nor applications.

To wipe the device cache partition:

1. Power off your device.
2. Power up while holding down the Volume up key and the Side key until the Samsung logo appears. 
3. An Android recovery menu will appear.
4. Use the Volume down key to scroll down to Wipe cache partition.
5. Click the side key to select it.
6. Use the Volume down key to scroll down to Yes. 
7. Click the side key to select it. The Cache will be wiped almost instantaneously. 
8. Click the side key to select "Reboot system now" 

[bryce890]

There is going to be a up date to fix it until than you can do that or wait

[wicho10103]

After updating to OUI 7, my battery has started to drain very quickly. In the past, I only needed to charge my phone once a day, but now I'm having to charge it twice or more. When I check which apps are using my battery, they only account for 40% of the usage. So, where is the other 60% going? 

Sometimes my phone powers off by itself, and when I turn it back on, I find that there is only half of the battery remaining. Last night, my phone had 80% battery, and this morning it was down to 40%. Why is this happening? 

Has anyone else experienced similar problems? How can I fix this?

[KevinFR]

This happens with my Samsung a35 and it just pmo

[Einstien2409]

I updated to the onei8 and it significantly tanked my battery life. I used to go to work at 8am with 100% and return home at 9pm with a 10%~ charge, now I can't even go after 5pm with more than 5%. 

The SS below will show how quickly the battery is dropping. 

It was Columbus day so I decided to go out at 11.40 with 52% charge. Came home at 4 and the battery was at 1%. All I did was browse google and some Instagram. This is appalling. 

[Shakewell]

Planned obsolescence. I don't believe for one second Samsung didnt know this would happen. They already have a track record of doing it once before. The last update to my S21 Ultra decimated performance and battery life and forced me to have to upgrade to an s25. Super shady company.

[Einstien2409]

Do you know how to revert back to oneUI7? That update did a hit on the battery and started the light bleeding on the back cameras. I hate that Chinese phones aren't big in the US.

[Chadmiller]

Unfortunately the only way is to locate and download a new os with one ui 7 n droid 15 then to add to flashdrive then load bootloader and wipe the hard drive and install new os and it is not easy to find the right os

[CEParsons]

Downgrading is not possible by any official method. It is not recommended to attempt to do so by an unofficial method, as doing so could brick your device.

Galaxy phones have an adaptive battery feature that uses machine learning to optimize battery consumption based on your usage.

After a major software update, this feature resets and needs to relearn your usage patterns. You may notice diminished battery life for a week or so while this process takes place.

In the meantime, there are some things you can do to help.

Have you performed these steps for routine maintenence?

☆ Follow Samsung’s Best Practices Guide

In particular, clearing device cache is an important practice in order to clean up junk files and keep things running smooth. This is crucial after an update.

See the guide here: https://us.community.samsung.com/t5/Tips-Tricks/Best-Practices-After-an-Update/ba-p/3200871?src=Shar...

☆ Use Samsung’s Good Guardians

It appears you may already be using Good Guardians.

If you haven't already, use App Booster to re-optimize your apps. This is something that should be done after an update. Running Memory Guardian may be helpful as well. Battery guardian also provides options to help with battery usage.

Download Good Guardians here: https://apps.samsung.com/appquery/appDetail.as?appId=com.android.samsung.utilityapp

Hope this helps!