S4 Mini Battery life

[uruno]

sorry guys bad news this is a real solition

Just take look guys,
if your phone is made in china u must have battery drain problem,noway to dont have.
if made in korea or vietnam; u r the lucky person who is have no battery drain prob .
i've got chance to test chinese and vietnam ones at the same time
so far vietnam one is superior than chinese (3 times slower drain unBelieveable
so if u have china one unfortunately sell it ,throw away or burn it
cause nothing gona sort your problem out
just buy vitnam or korean (made in ) s4 mini this is the real solution for s4 mini lovers
dont west your time with karnel , rom ex.. bla bla u will never Get Satisfaction by this ways .
Believe me or not just telling you...
by the way
im not korean or chinese lol
THATS ALL

 

[dagobert2000]

Battery drops from 23% to 0% within 2 minutes

Hi guys,

Since a few weeks my Samsung S4 mini phone has a huge battery drain (sry, i can't post external links here). Last evening I looked at the screen and saw the battery status decrementing every few seconds. In 2 minutes it fell from 23% to 0%!
The rapid change always starts at about 25%.

Recently i also bought a new battery because i thought that it's damaged. But unfortunately the phone shows the same effect with the new battery ;-(

Any suggestions what I can try?
thanks a lot
dd
PS: I was running latest stable Cyanogenmod - a few days ago I switched to cm12 nightly to try if it gets better, but in case of battery drain nothing changed.

 

[thethakuri]

My 2 cents on S4-mini (i9192) battery life

I might have jumped a little too late on this bandwagon but I thought I should put in my two cents fo advice anyways. I know that people are experiencing battery drain issues with S4mini (bought before 2014), mainly due to the faulty board. However, I recently bought mine (i9192 -Dual Sim) and wasn't experiencing extraordinary drain. However, I was still having about 1.8%/hr drain overnight with everything off. I know that this is not much but its not normal either. What I figured was that one of my cell radio wasn't full bar (i.e. it might be looking for better signal all night long). Upon close inspection, I found out that the mobile network for this particular SIM was set to choose between WCDMA/GSM by default. WCDMA is used for 3g while GSM for 2g. Where I live, the signal for WCDMA is not too strong so the phone kept on looking for stronger signal. Once I turned the options for both the SIMs to GSM only, I get about 0.7-0.8% drain per hour. It is still a lot compared to my iPhone 4(which would last me almost a week), but with dual sims and all, I don't think I can complain.

 

[czary01]

s4

the friends I have on my phone too as the s4 mini excessive warming may cause problems there. does your job when charging the phone in General.

 

[honeyx]

Just take look guys,
if your phone is made in china u must have battery drain problem,noway to dont have.
if made in korea or vietnam; u r the lucky person who is have no battery drain prob .
i've got chance to test chinese and vietnam ones at the same time
so far vietnam one is superior than chinese (3 times slower drain unBelieveable
so if u have china one unfortunately sell it ,throw away or burn it
cause nothing gona sort your problem out
just buy vitnam or korean (made in ) s4 mini this is the real solution for s4 mini lovers
dont west your time with karnel , rom ex.. bla bla u will never Get Satisfaction by this ways .
Believe me or not just telling you...
by the way
im not korean or chinese lol
THATS ALL

This is not true. Mine has a battery dain of about 1-2% per hour with Wifi and mobile data on at home.
This is all more depending to which signal strenght you have. Which version of google Play Services is installed and what else apps are keeping your device active.

By using Greenify, Disable Services (or better My Android Tools) and Amplify you can reduce the wakelocks caused by the Play services and other apps and increase the battery life dramatically. Plus a good signal strenght and you can get below 1% battery drain per hour. This with an active internet connection either by using Wifi or mobile.

Without using internet the battery can even last for almost one week in standby at a single charge when configured well by getting rid of all that unnecessary wakelocks.
It´s not the device. It´s Google with it´s Play services, the quality of your signal strenght and last but not least you by installing crappy apps that keep the device active.

 

[john-soda]

Just take look guys,
if your phone is made in china u must have battery drain problem,noway to dont have.
if made in korea or vietnam; u r the lucky person who is have no battery drain prob .
THATS ALL

How can I find out where my phone is made? When I open my one I can see only "made by Samsung". Nothing else.
And how big are the chances to get a chinese model if I buy one on Amazon Germany?

 

[sasank360]

How can I find out where my phone is made? When I open my one I can see only "made by Samsung". Nothing else.
And how big are the chances to get a chinese model if I buy one on Amazon Germany?

Open back panel and battery. On the sticker that has IMEI number, there is a line that says "" MADE IN CHINA BY SAMSUNG ""
It can be china/korea/vietnam. My phone is made in china. However my cousin bought it in England. So it is likely that china made
s4 mini units are available in Europe. My device is LTE model I9195.

 

[RuffBuster]

Open back panel and battery. On the sticker that has IMEI number, there is a line that says "" MADE IN CHINA BY SAMSUNG ""
It can be china/korea/vietnam. My phone is made in china. However my cousin bought it in England. So it is likely that china made
s4 mini units are available in Europe. My device is LTE model I9195.

Mine doesn't say "made in" on the inside of the phone. Just yateley, UK. I bought the phone less than a month ago in the UK. Battery says vietnam. Think the build date on battery is of march this year.

 

[abv2711]

I have a leak rate of 1 % every 4 min
i have a gt-9192

 

[RuffBuster]

Mine doesn't say "made in" on the inside of the phone. Just yateley, UK. I bought the phone less than a month ago in the UK. Battery says vietnam. Think the build date on battery is of march this year.

I couldn't find the location of manufacture of my phone anywhere on the phone itself or on the box but I found an app which tells me when my phone was made. where it was made and a whole lot of other information about its build. people may already know about this app but for those who don't I'm using the app showing in the pictures attached. And for me great news my phone was made in Vietnam this year and has been running great since purchase which has made me a lot more confident to break my Knox and maybe install a custom ROM maybe...

Hope this helps anyone else wondering about their own phone.

Be aware though information may not be as accurate if using a custom ROM. best to use a stock ROM with this app but may work fine on custom ROMs I haven't tried yet...

 

[sipuliosmo]

This solved my battery drain!

Hello everyone, thanks for good tips regarding s4 mini's battery life!

Unfortunately most tips didn't work for my phone, and I tried almost all the battery saving apps, which I found to be BS(just like the cleaners etc.). I've also tried these things:
- aeroplane mode
- new battery
- greenify
-remove the memory card
- took the phone to service
- resetting the phone
- CWM
- Lollipop

My problem was the stand by/idle battery drain, about 4-5%/h. When I rebooted my i9195, the drain was away for few hours but always came back. I've been very frustrated with this problem. But then, once again I got so annoyed decided to change the OS to the CM11. Everything was fine for couple of weeks and I was very pleased with the battery life! Then the drain started again, I was like WTF. Fortunately the CM11 has large scale of privacy/security settings, where I found out that the google's play store was the triggering software. I guess that Gplay store has always been the buggy software, just didn't have right software to find it. From privacy settings I was able to deny some rights from the app, that did the trick.

Now I have only one problem, the battery is always empty because I forget to charge it

EDIT: From the battery graph one can see, that now the drain is below 2%/h, which is a miracle for me!

 

[monitorer]

I have the same issue of the battery draining a lot when idle with nothing running and all wifi/3g/gps off.
I'm still testing whether restarting after charging works as a workaround...

Did replacing the motherboard or some part of it fix the issue for anyone? (If you sent it to Samsung and requested that.)

I found out that the previous owner sent it to Samsung because of these issues, but they only replaced the battery.

 

[twizar]

I never experienced the extreme battery drain that some of you have, but the battery life also went down a lot over the last two years of use on my phone.
But instead of replacing the phone or the battery with a new standard one, I bought a Zerolemon 5100mAh battery and from 3 hours of screen on time with the original battery, I get now 8 hours and 2 to 3 days of heavy use, instead of 1 day.
If you want more informations about it, I made a youtube video: "Zerolemon 5100mAh Extended Battery for Samsung Galaxy S4 Mini - unboxing and first impressions"
Feel free to ask anything about it in the video comments section.

 

[amanam]

Hi everybody
I know this threat is a little bit outdated, but maybe someone comes around...
Now I am a owner of that s4 mini phone and quite happy. The battery drainage is usually 3% per night with wifi and some push services. As many people wrote in this threat,it sometimes changes to 20% per night even in aeroplane mode until restart which resolves the problem temporally.
But different from what people wrote here, not the full charging to 100% seems to trigger the problem, I tested it twice, the drainage after it was fine.
1: Are there any experiences what else could trigger this switch in drainage because I have no idea and cannot induce it?

And about the solution with the new kernel:
2: My phone ist Kitkat 4.4.2, the custom kernel solutions here always referred to 4.2.2 I think, any experiences with 4.4.2 and which kernel to use?
3: Is it really possible to flash the kernel without root?
4: How can I flash back the stock kernel If there are problems with the custom one?
Any help really appreciated..