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Help S4 Overheating & Battery Drain

natashaleslie said:
Both the phone and that app report that the screen is causing all the battery drain
Click to expand...

Go to the Battery usage screen, and you'll see a %age listed against "Screen" - that's the %age of screen-on time vs time on battery, as displayed at the top of the graph. Now tap "Screen" and you'll go to another display that shows the actual screen-on time; that should tally with the %age shown previously.
 
My S4 has never got as hot as my S2 used to.

Both phones heat up when you are doing something processor or graphics intensive and I think that's only to be expected. However, my S2 also randomly got very hot for no apparent reason, which my S4 has so far not done.
 
The Galaxy S4 doesn't get that hot while gaming, less so that my old Galaxy S3.

However all Snapdragon 600 devices suffer with what I think is aggressive thermal throttling during heavy apps, I don't think any of them can provide the max CPU speed consistently which is a shame.

Basically the advertised high clockspeeds are for marketing, would be interesting to know where clockspeeds settle on different devices after a long gaming session.
 
I am surprised at how hot this sucker gets. This morning, using it via WiFi to answer emails and I can feel the heat rising through the screen. I would not say it is uncomfortable to hold at all, but this phone is kind of toasty.

My Moto Androids ran very warm too (especially the Droid 2G). With my Droid 3, I found that adding an extended battery helped.

Anyway, I hope this is not going to be an issue.

Last night, I was out with a buddy who has an S3 and I asked him if he liked it. Interestingly, his main complaint was heat.

Thoughts?
 
WalkaboutDavid said:
I am surprised at how hot this sucker gets. This morning, using it via WiFi to answer emails and I can feel the heat rising through the screen. I would not say it is uncomfortable to hold at all, but this phone is kind of toasty.

My Moto Androids ran very warm too (especially the Droid 2G). With my Droid 3, I found that adding an extended battery helped.

Anyway, I hope this is not going to be an issue.

Last night, I was out with a buddy who has an S3 and I asked him if he liked it. Interestingly, his main complaint was heat.

Thoughts?
Click to expand...

As mentioned in this thread before the merge:

The S3 gets hot and the chipset uses the same exact fabrication process as the S4. Logic suggests a device that already runs hot (depending on use) will get hotter if a faster chipset and the gpu is pushing data to over twice the pixels.

The soon to release 800 is the first true evolution of the Qualcomm family, since a lot faster and a smaller micron fabrication process (less heat caused by resistance). That is unless it is clocked so high the fabrication process is offset by the faster speed, so still runs hot.

I wonder if the S4 refresh with this chipset will go beyond Korea? Some people assumed it was just the LTE radio that was updated for this chipset. Not correct.
 
I've only had mine for about a week now, and usually get about 12hrs +, with auto screen brightness on using around 4 hrs of on screen time, 1 hrs GPS usage, streaming Pandora for about 1 1/2 hrs. and checking emails, facebook and reading. I've only seen the temp go up to 102F. What I have noticed though, is even with 2GB of RAM, I have been down to about 300 MB of RAM. So I use the stock app manager and close apps, I know I won't be using in awhile. I have also disabled apps I won't be using too. Also, I clear the running apps list. This seems to help with battery drain and temp. I have a lot of games on my phone, but I'm not a heavy 3D gamer.

Edited: Forgot to mention I'm on wifi 90% of the time and use bluetooth for about an 1 hrs.
 
Perfect set up not to have a hot running device. Do not worry about the ram, since Android likes to cache apps in it. They are not all running at the same time and most just sleeping. Android shuffles apps based on use and what is being used live (it kills apps once ram gets close to full).

Now, there are a few rogue apps that can run and drain battery, but most behave.
 
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