[Galaxy S II Android Development] nzkller:
That guide it is very good I have found this one that it a little shorter an explain what people need to know!! the other one is the best!!!!! because has every detail...... this one in the other hand has only the setting of Extweaks!!!

http://xdaforums.com/showthread.php?t=1572937

---------- Post added at 01:46 AM ---------- Previous post was at 01:45 AM ----------

Check my post above

---------- Post added at 01:51 AM ---------- Previous post was at 01:46 AM ----------

Follow this!! you shoul get some imporvement!!!

Ok let me see if I can explain mysef!!! when I flash V1.1 I began to notice the heat in my phone.. So at first I thought it was the rom, but then I figure out maybe the kernel of siyah!!! and the profiles of Extweaks were causing this problem....

So I give it a try and flash the stock version of LP7 and I felt that the heat was more o less the same..... so after thinking a little bit I tried undervolting!!! but no because I want to save some battery it is because I wanted to see if I got the voltage a few mV down the heat should go down too....

after all saving battery with undervolting it only gives you like 2% more :S so no worth the risk of the problems that can come with this!!!! We should know that the POWER (Heat) = Capacitance*Frequency*Voltage^2 as you can see in here http://en.wikipedia.org/wiki/CPU_power_dissipation.......

So if we lower the voltage a little bit we will be saving a lot of heat!!! but don't confuse yourself thinking that if I do some underclocking the issue will be solved, the most important variable is the voltage.........

In fact 100Mhz will consume more battery than 200Mhz that will be a subject for another post !! xD ............

Ok lets contine....I did some undervolting and I'm not so happy with the results so what I did was installed this temperature widget or info widget CPU BATTERY TEMP System widget and monitor myself the temperature each time I make some hard gaming like fifa12 mc3 something like that and at different stages of the processor using CPU Control from the play store!!! and the phone until 1.00Ghz works with a little heat you can hardly feel it and in 1.2Ghz you feel a little bit of heat so for me it was fine and the games were performing really smoothly....

So my recommendation is to install the siyah kernel!! the lastest one!!!!.........active the battery mode tweaks in the recovery menu and NO Undervolting, you can do some Underclocking leaving your phone between 100Mhz and 1000Mhz.

And the heat should be fine at this moment!!!! that is the way I fixed it or I get used to it maybe!! thats why I told in my former post that the overheating is a really subjective and it depends on each one of us!!!!

I hope this would help you out!!!!

Give it a try!!!!! and let me know!!!!!!!!!!! If you need anything else,please let me know!!!!!

Best regards!!!!

ok then do the underclocking like this in cpu control!!

100Mhz to 1000Mhz if you still want more battery set it to 100Mhz to 800Mhz

You will see the difference!!! and of course leave the battery profile in Siyah kernel!!!!

REMEMBER TO PUT THE BATTERY PROFILE IN THE SIYAH KERNEL RECOVERY!!!! AND YOU HAVE TO REST THIS SETTING EACH TIME YOUR GOING TO FLASH A NEW KERNEL!!!!

I hope it will help you!!!! with the battery life and the overheating if you have it you will kill two birdss in one shot!!!

Let me knoe the results!!!

Best regards!