Originally Posted by Simoco
Yes that's what I was just thinking about, considering that the life of the battery is normal if everything works fine. Well now I'm thinking that all what i need is to update from 4.0.2 to 4.2.2
So is there anyone like a best version of Android
Buddy, you haven't seen the real part of Android yet. Considering your battery issue, remove the battery and simply touch it in the middle. If the battery is swollen or bloated, then you need a new battery (3 years of usage make your battery weaker and subject to faster draining due to deformation of the cells inside the battery). In no doubt, Samsung's Touchwiz is THE main cause of lagging and drain, so here are my suggestions on ROMs that can fix your problem:
1- For 2.3 GB ROMs, go for CyanogenMod 7.2.0 with siyah kernel 2.6 (google the kernel name to find it or ask me for a link just in case)
2- For 4.0 ICS ROMs, go for CyanogenMod 9 stable on get.cm and go for Siyah 5.0.1 stable for more hardware customizing.
3- For 4.1 JB ROMs. well, you can grab CyanogenMod 10 or SlimBean 4.1 old release for the I9100 but I recommend skipping this version of Android (it's too boring)
4- For 4.2 JB ROMs, try Cyanogenmod 10.1.3 stable. if you love Touchwiz and want a stock experience, try Revolution Rom UX build 2 which is too close to an official 4.2 stock update. When it comes to me, SuperNexus 2.0 is the best 4.2.2 ROM I ever used. Flash Dorimanx 9.43 stable to get more out of your device just in case buddy.
5- For 4.3 JB ROMs, go for CyanogenMod 10.2, or SlimBean 4.3 build 2.2 stable (too awesome), or PAC-MAN ROM, or Carbon, Cyanfox...
6- For 4.4 KK ROMs, try out Cyanogenmod 11.0 nightlies or sanpshots, or go for OmniRom 4.4, or Cyanfox 4.4, or SlimKat, BeanStalk...
It's your choice, and I would recommend installing Dorimanx Kernel above the ROM you choose in order to configure your CPU clock speed and processor governers according to your kind of usage. Good luck