[HTC Rezound] Marine6680:
Edit:

From what I have gathered from those that have provided info.

Around 120*F is normal for heavy use, around 105-110* for medium use, 100-105* for light use. This is with cell data enabled, wifi lowers temps 5-10*, also temps are for extended use scenarios. (over 10-15 min)

Heavy use= 3D game or graphically intensive 2D game, streaming videos especially HD

Medium use= basic games web surfing sites with lots of images or some flash content

Light use= sending SMS, basic fooling with settings or other basic functions, streaming music with the screen off

I think we need to get a bit more scientific about testing this overheating issue out. I need help from a large group of people. I need those who think they have overheat issues and those who do not for the info to be useful.

First off... I believe these temps are just the battery, not the CPU. I think the CPU is running relatively cool as the rest of the phone does not heat up, or it seems what heat is felt is coming from the battery only.

This would explain why people claim that the extended battery does not have this issue. As batteries with higher mAh ratings are able to handle the higher power demands with less heat.

We need to do comparison tests using the same apps across tests and the same use times as well. Also no over or under-clocking and using the same CPU governor. (and between everyone participating where possible)

I have Minecraft and Sleepy Jack, they both produce similar temps after 15 minutes of play time. (around 117-120*F) I do not know if it gets any hotter with longer use because I rarely play longer than that at a time. I am at about the same temp after only 10 minutes so maybe that is the highest it gets.

I know for certain that enabling WiFi has a big impact on the temps. My fiance's phone would only get about 95*F, (according to the SetCPU widget) but when LTE is enabled it would get to 115*F. Mine hits 105* on WiFi.

I want to do at least two tests.

Lets use the following steps to test:

-For all testing the test time will be 15 minutes of play time.

-Lets all use Minecraft since there is a free version and I know the app causes the phone to work hard.

-No over or under-clocking

-On Demand governor

Test 1) Airplane mode enabled

Test 2) 3G enabled (not everyone lives in a LTE area, if you do, data from LTE enabled would be useful as well)

Now some optional tests. I did some rudimentary testing and there seemed to be an impact on temps.

Optional 3) Using interactive governor or Lag free governor

Optional 4) Use a different kernel... If you are on stock switch to ziggy's and vice versa. (this may be the most promising test as since switching to ziggy's I have had a few lockups where the old Android logo pops up on the screen and I need to do a battery pull to fix it. This happens to the fiance's device as well)

If you do these tests, please post the results, and what ROM and kernel you are using. I will keep track of the results and update as appropriate.

Lets see if we can find some consistent data and narrow this heat issue down.

Edit:

Running Ziggy's kernel I hit 108*F kept playing and shortly after the phone did the odd crash I mentioned.