frequent phone call interruptions, Samsung GT-I9192, 4.4.2 (S4 min dual sim)

[bitnoise]

Hi,
I am sadly no mobile expert and need your kind support. Since over half a year I have 2 problems

• very frequent phone call interruptions
• much lower battery life time

My phone/sim provider in Germany are Vodafone and Congstar. But I do not think its related to them.

All the trouble started after a certain upgrade to newer versions of Android OS, but can't remember when this exactly started. Then the battery life went down significantly and I get those annoying interruptions in phone calls up to 3-4 times in a ~15 minute call. Its so bad .. What could you recommend to me ?
Is there a better image downloadable, maybe fallback to older version ?
Or is it possible to fallback to the version in ROM ? I fear side effects and unfixed system holes by this.
Thanks for any help !
BR

 

[DonQuichotte]

Moin,

I highly recommend you to switch to CyanogenMod. I took the switch to CM right after i bought my GT-I9195 and all I can say I've never expirenced such problems either on Vodafone nor O2. ATM I'm still at CM11 as this is rock stable and battery life is quite good, ~2-3 days depending on usage
Just follow this steps and you've got nothing to worry about.

1. install custom recovery
2. take a full backup of your current system + SD Card just for the case...
3. install CM11 for your phone + pico OpenGAPPS
4. flash the latest Modem EUR region for your phone right after
5. use it for a few days without any Custom kernel and a minimum of installed apps
6. if your not satisfied restore the backup from step 2.

Sounds simple...it is indeed.

Regards / Grüße
DonQ

 

[bitnoise]

Moin,

I highly recommend you to switch to CyanogenMod. I took the switch to CM right after i bought my GT-I9195 and all I can say I've never expirenced such problems either on Vodafone nor O2. ATM I'm still at CM11 as this is rock stable and battery life is quite good, ~2-3 days depending on usage
Just follow this steps and you've got nothing to worry about.

1. install custom recovery
2. take a full backup of your current system + SD Card just for the case...
3. install CM11 for your phone + pico OpenGAPPS
4. flash the latest Modem EUR region for your phone right after
5. use it for a few days without any Custom kernel and a minimum of installed apps
6. if your not satisfied restore the backup from step 2.

Sounds simple...it is indeed.

Regards / Grüße
DonQ

1st of all you talk about your GT-I9195 model which is a normal S4 mini, but I have the DUAL SIM version.

Thanks but I want to stay with the normal SW train, I installed CM on a S3 1y ago and I didn't like the look and feel. So CM is not an option for me.

Besides my preferences, if I look at this article its nice to see, that there is progress for the DUAL SIM version but there are still known issues like stuttering problems and of you look down further the auther doesn't intend to create a CM official version out of it, so it looks more like a "hack" than something which is further supported by CM. Looks like an ALPHA SW and a one way road to me. http://forum.xda-developers.com/showthread.php?t=2790789

So .. other ideas ?!

 

[Kralisec]

Hello,

One point before flashing: your knox is 0x0 ? 1st flash result 0x1 and warranty lost.

Choice is to flash and try to solve this problem by yourself but lost the warranty or see with samsung support what they can do, but after 1st flash there is no coming back.

 

[bitnoise]

Hello,

One point before flashing: your knox is 0x0 ? 1st flash result 0x1 and warranty lost.

Choice is to flash and try to solve this problem by yourself but lost the warranty or see with samsung support what they can do, but after 1st flash there is no coming back.

I have no clue about knox. I am using the smartphone with a private and a company SIM.
But there are is company deployed SW on the smartphone. Also e-mail is pure private.
I only use DUAL SIM for the purpose of being able to make company phone calls with the company SIM.

Is there no way to get rid of 4.4.2 ? I remember the phone has been sold with 4.2.x.
Is there no 4.2 stored somewhere on the phone which can be reactivated ? At least then I could check, wheter it runs more stable and whether battery life is then better. But in fact I have no Kies backup, as I hate this bloated software.

 

[Kralisec]

Knox information : https://en.wikipedia.org/wiki/Samsung_Knox
more important: at the end, e-fuse part: "This information may be used by Samsung to deny warranty service"

 

[bitnoise]

Knox information : https://en.wikipedia.org/wiki/Samsung_Knox
more important: at the end, e-fuse part: "This information may be used by Samsung to deny warranty service"

Is somebody able to explain to me in easy words, what this all now means to me ?

Does this mean, I can't do a downgrade without loosing any kind of warranty ?

Should this be the case, I assume I am stuck n the 4.4.2 path and can only hope for vendor support (Samsung).

So shall I open a case with Samsung and hope that they fix the issue should it be a SW related issue ?

 

[Kralisec]

In short: if you flash using odin or heimdall for the 1st time you will loose your warranty.

Samsung update is merged inside rom, it's not something you can just uninstall.
I don't know if usual samsung tool let you downgrade to a previous version
(this time without knox issue since it's pure samsung way to update)