Galaxy S6, S6 edge, One M9, G Flex 2, iPhone 6: that the most heat? – The Digital

While heating problems marred the launch of the HTC One M9, we decided to compare the temperatures reached by each of the spearheads of the moment. Who Galaxy S6 and S6 Edge, HTC One M9, LG G Flex 2 and iPhone 6 heats the more after having been subjected to little stress test?

To reach high temperatures, we run applications very greedy on each of these smartphones for several minutes. We then armed with our thermal camera to raise the level of heat thus generated. The scales present on each image are the same, they range from 20 to 40 ° C, so you can easily compare the levels and heating zones through colors.

 
 

From left to right:. Samsung Galaxy S6, HTC One and Galaxy S6 M9 Edge

HTC One M9, mocked for his problems heater in its infancy, less heat than its competitors on Android; only the iPhone 6 does better among the models tested here. One thing to temper that the hull of the HTC diffuse heat on most of its surface while it is still confined to his opponents. The LG G Flex 2, also it features a Qualcomm Snapdragon SoC 810 is the worst student in the class, the latter exceeding 41 ° C.
As it stands, could therefore think that models with Qualcomm SoC S810 are not worse than Samsung Exynos and 7 Octa 7420 or iPhone 6 and A8. But when we dig a little question, we realize that there is a “trick” that allows HTC and LG to salvage. Indeed, when one turns a hungry application, note that only 2 of the 4 core Cortex A57 work, the other two remaining simply dumb.

We already highlighted the link between temperature and performance of smartphones, through an article. So we put the G Flex 2 in the refrigerator for 30 minutes, just to refresh his circuits. And then, as if by magic, the same procedure to work, all hearts background. This phenomenon is reminiscent of what happens on graphics cards for computers, in the same way, vary their frequency or voltage to contain the heat. Here, frequency variation point, the hearts are purely cut. This results in games specifically ( Real Racing 3 ), the appearance of microphones lags , not necessarily disabling, but that one might consider unacceptable on top models in 2015. We can only worry about the impact of such a problem when the thermometer will reach summer values.

The manufacturers seem to have great difficulty in optimizing smartphones equipped with the S810. Hopefully the top models yet to be released as the LG G4 and Xperia Z4 have found a solution.

In addition, our full review of the LG G Flex 2 will be released Thursday, April 16.