Ridiculous Battery Lifetime

[fafou34]

Hello All,

I have a battery lifetime of about 7-8 hours with a screen on time of 3:30 max with my Mi4C. Is it a regular number for you all? I really like this device but having to charge my device twice a day is really annoying.
I am using the last Resurrection Remix Rom (see screenshots). I red that the battery consumption is mainly dependent on the Kernel installed. Is it possible that I still have an old Kernel that is absolutly not optimised.

 

[victor nica]

I would say 4 : 30 hours of SOT with medium ussage is the best this phone can do.

The last builds of RR are not.so friendly.with battery life . I rarely got 4 hours of SOT.

I recommend you LOS 15. I never get less the 4 hours of SOT with medium to high ussage (only using data lte connection , high luminosity , GPS, a few calls).

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[victor nica]

This is current charge. Only LTE.

The rom is very fast, but it doesn't have the customizations RR does.

Also, it has better ram management and it doesn't force close your recent apps and reload them as RR does.

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[fafou34]

It looks great but I just red here:
https://forum.xda-developers.com/mi-4c/development/alpha-lineageos-15-0-libra-aqua-t3667638

That the camera is not working...

Maybe you managed to install a good camera app? Like the snapdragon camera?

 

[victor nica]

It looks great but I just red here:
https://forum.xda-developers.com/mi-4c/development/alpha-lineageos-15-0-libra-aqua-t3667638

That the camera is not working...

Maybe you managed to install a good camera app? Like the snapdragon camera?

I installed the ported MIUI camera . The one from the mi a1.

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[fafou34]

Great so I will try that.
Fist I have a TWRP 3 for android 7. Should I install another one before?

I found two websites that explain how to install it. The first one (http://www.lineageosrom.com/2017/09/download-lineageos-15-oreo-mi4c.html)
just says to first do a factory reset in TWRP then install the Rom and finally do a swipe cache/Dalvik

The second one (https://forum.xda-developers.com/mi-4c/development/alpha-lineageos-15-0-libra-aqua-t3667638)
says to first wipe cache/Dalvik/data and system, then install a "firmware", then install the ROM (and finally the GAPPS)

Which one do you recommend? I guess the second one will be cleaner (I don't care about reinstalling all the apps).
Where should I put the firmware and the ROM in order to still have it on the phone after a wipe cache/Dalvik/data and system?


Thank you for your help in my quest to have a phone that can work during one full day!

 

[victor nica]

The TWRP is fine, this rom works with both nougat and lollipop bootloader.
The second one. It's the one that I have. Take the last build from yesterday, it has the better ram management.
Put in on internal storage: documents, downloads or just directly. It won't get erased.

Be sure you have all the set up before installing.
Rom, firmware, apps, MIUI camera zip.

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[fafou34]

Thanks!

Last question. I see that there is in the source section (https://forum.xda-developers.com/mi-4c/development/alpha-lineageos-15-0-libra-aqua-t3667638) two download links DEVICE and KERNEL.

Should I install both? Like first the KERNEL and then the DEVICE?

This would lead to the following order
Install the last TWRP
Wipe Cache/Dalvik/Data/System
Install the Firmware
Install the KERNEL
Install the ROM
Install Gapp
Install Photo app

Reboot

 

[victor nica]

No. Go to the first thing , the download button which takes you here https://androidfilehost.com/?w=files&flid=212291

And for the firmware click on the 8.5.1 link.
You need no other kernel or firmware.

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[fafou34]

Thank you!

 

[victor nica]

You're welcome !

*Be sure you give the camera app all permissions.

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[fafou34]

So I tried today. The ROM and the GAPPS were successfully installed but when I start google play it is stuck on Checking Info (for 20 minutes now...)
I installed the last micro Gapps arm64 for android 8

 

[victor nica]

I heard that some people have problems with gapss from opengapps . Try different gapps, it will work eventually.



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[fafou34]

So finally I managed to make it work I started from scratch and installed the nano opengapps right after the ROM, without any reboot between them

 

[fafou34]

After a day of use I had 22% battery left with a SOT of 2h15 minutes. I just don't get how people manage to reach 4+ hours. I am just using facebook messenger, whats app, gmail and chrome. I don't have any game or other battery draining app installed.
I already tried to change the battery so it is not coming from an old battery problem. I have the 3GB version. Might it be the difference with you? I am really thinking about changing phone even though this one fill my needs in terms of power.

 

[victor nica]

I have the 2gb. I don't know, maybe it's the battery. I abused this phone with GPS/data/ Waze on a 200 km drive and I still got 3 hours of SOT at the end of the day.




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[fafou34]

Well I bought a brand new one and didn't see any difference previously. Thanks for your help. I think this will be my first and last Xiaomi phone