[Galaxy S II Android Development] grottesgs2:
Battery very fast drain (1% per minute) + Phone temperature increase

Thank you for your answer!

I never used any beta kernel before that incident. The only ones I have been using through custom and yet stable ROM versions where XWDD (for rooting) CF-Root, ninphetamin, RAGEmod and Speedmod and I never ever had any problems with that in almost one year. The only small issue I had was a faster battery drain with Lite'ning ROM in the latest version but not as crazy as now. I was very happy with Rarity 3.85 and even didn't switch for 3.9. As I said before I prefered to wait for 4.0 and even told you take your time to do it,

For what my understanding is (correct me if I am wrong) a ROM is in fact:

- Android Operating System (kernel)

- Drivers (firmware, modem, CSC)

- applications set (CWM, SU, Go Launcher, ...)

- theme customization (icons, panels, window decoration ...)

It's so called a "ROM" because it is writting in a NAND memory. If so, indeed the apps+theming part of the ROM can't damage the hardware because it is relying on the kernel+drivers.

In my case, the only thing I remember before that is intensive 3G data usage, sync, GPS active for more than 3 hours and my battery went to the limit. Then I plugged the mobile during the night. I have already done that before and no problems in almost one year. But that time when I woke up in the morning my battery didn't charge and was almost empty...

Of course! But if it's a loop bogus between radio for specific provider (CSC/Modem) and power management it could happen under certain condition and not for everyone. It realy looks like sid922 is having the same issue as I have but with no hardware damage. And it looks like we aren't the only ones, that's what worried me in first place and made me go through a lot of tests (including reverting to stock) to conclude that the phone has been damaged.

I want to make it clear hear without misunderstanding, my main objective was to help and prevent other users from having hardware damage by finding the root cause.

I am not complaining or so. I know when you use Custom ROM you are doing it with no warranty and at your own risks. Of course I would get mad if warranty won't take it back that's why for the moment I will focus on factory reset.

In all the cases, I think you may be right about the kernel. If I would precisely incriminate a cullprit it would be Siyahkernel+KI4. Never ever had problem with other kernels. And I remarked that since I have been using Rarety with Siyah my phone started heating remarkably more than before and I had significant more force close for application. That never happened with speedmod. So I would suggest that Rarity switch to Speedmod for the sake of stability and security. Even the author of Siyah even said something like "don't blame me if your battery has issues".

The crazy thing is that I never played or tweaked anything I just used the ROMs as is and since I found Rarity the coolest one I have ever seen I said why not helping!?

Since my phone is going back on warranty tomorrow after I finish factory reset (unrooting, flash counter reset unless I need a JIG for that), do you have any other ideas/test I could do to understand what hapened and to contribute on how to prevent it for the sake of all the other users? I guess that would be the "spirit" everyone should have to help the community.

Thank you