The Samsung Galaxy S8 comes with a number of options to save battery. In this article I will refer to each of these features so you can get the most out of your Galaxy S8 or Galaxy S8 + .

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Understanding battery consumption in the Galaxy S8

Since the launch of the Galaxy S6, Samsung offers a tool to control power consumption and system memory. Over time, this service has evolved and, with the launch of the Galaxy S8, the South Korean manufacturer has consolidated this tool as a great option to try to save energy on their smartphones.

In the so-called “Device Maintenance”, this system function offers different modes of operation in both the Galaxy S8 and the Plus variant, as well as two modes of power consumption.

Operating mode

The function “Operation mode” is part of the operating system and is integrated through the maintenance of the device, in the Galaxy S8 configuration. This feature was added to the system with the launch of the Galaxy S7 line and, with the launch of the Galaxy Note 7, brought new features such as screen resolution control, which later came to the Galaxy S7 and S7 Edge with system update Operating system for Android Nougat.

With the problems that affected the battery explosion in Note 7, in 2016, the mode of operation was profiled as an important feature of Samsung devices, as, in addition to offering four different types of power consumption Depending on the hardware configuration, offered the opportunity for its engineers to optimize the design of the device without having to limit the battery too much.

By the way, the Galaxy S8 has a battery of 3.000mAh, while the Galaxy S8 + has 3.500mAh. With screens of 5.8 and 6.2 inches respectively, the two devices need an intelligent solution for good power autonomy.

There are four modes of operation for the Galaxy S8 and S8 +, we present them below:

  • Optimized (recommended) – This is how the Galaxy S8 leaves the factory. It serves to balance the battery life and screen resolution in daily use. It can be used with up to three screen resolutions: HD + (1480×720), FullHD + (2220×1080), WQHD + (2960×1440). The energy saving is directly related to the resolution of the screen.
  • Game – Improves the experience as the games run more efficiently. It can also be used in all three resolutions in optimized mode, but by default it is in FHD +.
  • Entertainment – Sets up music and videos in high quality sound (UHQ), and enhances the highest quality images through the video enhancer. It can be activated in all three resolution settings, but it uses WQHD + by default.
  • High performance – Utilizes the full potential of the Galaxy S8 display, with the brightness and resolution to the maximum.

As you may have noticed, each of these modes offers a different experience with the device. Therefore, during the time I have been using the Galaxy S8 I can say that the battery life of the device varies according to my use of system resources. So either I have to charge the device at least once a day, or day yes, no day. And this has also been demonstrated by the different benchmark tests.

Compare the battery performance of the Galaxy S8

OPTIMIZED 1  HD + screen resolution; 50% brightness Approximately 12h
OPTIMIZED 2 FHD + screen resolution; 50% brightness 8:37 a.m.
OPTIMIZED 3 WQHD + screen resolution; 50% brightness 9:47 a.m.
GAME WQHD + screen resolution; 10% more screen brightness; Game Launcher enabled 7:20 a.m.
ENTERTAINMENT FHD + screen resolution; Video enhancement; 10% more brightness on the screen; Game Launcher enabled; UHQ audio optimizer turned on 6:24 a.m.
HIGH PERFORMANCE WQHD + screen resolution; 10% more screen brightness 6:56 a.m.

For this type of testing, our team uses the PCMark 2.0 battery benchmark. This application measures the performance and life of the battery together. And these tests are based on the use of the device on a day-to-day basis rather than a random algorithm.

Finally, the result of the test is provided in a table, where we can see the energy consumption at each moment of the test, and the variation of the temperature during the process.

Optimized mode offers the best battery life

Benchmark battery S8
To the left, the S8 is in entertainment mode: right, in optimized mode (screen resolution WQHD +) / © AndroidPIT

That said, the optimized mode, with which the device comes from the factory, will offer the best battery life of the four options. However, remember that you will lose some of the features of the Galaxy S8, such as maximum screen resolutions and audio, for example.

Modes of energy consumption

Power consumption modes are not exclusive to Samsung as is the mode of operation and yet use the technology developed by the manufacturer. Sony, for example, offers Stamina and Ultra Stamina mode.

Samsung’s options are in the setup menu as well as the maintenance of the device, and extend the battery life while limiting the CPU speed and the use of the network in the background. The difference between the average mode and the maximum mode is the size of the impact of these limitations on the system.

Galaxy s8 optimization battery
Galaxy S8 offers two power saving modes / © AndroidPIT

This type of function is used for extreme cases, when you really need to keep the device battery for a long period of time. Both options can be customized, so you have more freedom of use of the device, or even more time with it. To customize each mode, click “Customize” and change the preferences of each option.

Other battery saving methods

Both the Galaxy S8 and the Galaxy S8 + are devices too young to have serious problems of energy consumption. Therefore, given the options offered by the system, if you are still suffering for the duration of the power autonomy of your device, there are some measures that can reduce the impact on the performance of the device and, therefore, increase the Time of use of the same.

Opinion by Camila Rinaldi
The Galaxy S8 is too new to have serious power consumption problems.
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Below you can see a list of options ranging from small changes to limits on the use of the device. As I said, the consumption of the battery depends on you, so you must decide whether to use these resources or not based on the use you make of the Galaxy S8.

Disable “Always On”

The “Always On” is very functional since, in addition to showing the notifications you receive, by double clicking on these you can directly access the message in question.

Now, if you do not use this function, you can disable or limit it. To deactivate the “Always On” that comes by default from the factory, just go to Settings> Lock screen and security> Always On> Disable function.

Now, you can simply simply use it at pre-defined times. To do so, go to Settings> Security lock and screen> Always On> Disable: Always show> Set calendar.

Decrease active screen time

Limiting display activity time is an excellent method to increase battery life. So, if you do not work with the phone all the time, reconsider the screen time you use. The standard backlight setting for the Galaxy S8 can be 15 seconds in duration.

You can configure the timeout settings in Settings> Display> Duration> Select 15 seconds.

Check the brightness of the screen

In combination with the previous point, use to decrease the brightness of the device screen using the shortcuts. Firstly, make sure that the automatic brightness is off, since everything related to the brightness adjustment consumes a lot of battery. To do this, go to Settings> Display> Auto Brightness> Disable option.

From there, it controls the brightness of the screen in the shortcut bar quickly. However simple the tricks on how to limit the resting mode and brightness of your Galaxy S8 screen look, at the end of the day you will notice that there is a difference between using them and not.

Suspend an app and avoid using the battery in the background

With Android Nougat, the option to suspend secondary applications began to prevent them from using the battery when they are in the background. This means that these applications can not receive updates or send notifications. However, this will happen when you open them again.

To do this, simply press and hold your finger on the application in question and, when you open the option box, choose the “Suspend” option. This will cause the application to “go to sleep”.

Suspend apps galaxy s8
Long pressing an app in use, you can suspend power and data in the background / © AndroidPIT

But remember that when you do this, of course, the application must be running in the background, otherwise this option will not appear.

Turn off GPS

On Android, the location service is run by Google and uses GPS as one of the location options. However, this is a function that, if it is “always active”, consumes a lot of energy.

To check your location, go to Settings> Google> Location> Location method> Battery saving.

Disable Bluetooth

A device like the Galaxy S8 offers a number of features and in 2017, one of the most interesting is that it comes with Bluetooth 5 , which allows you to connect the device with up to two headphones or speakers at the same time. But it turns out that we often forget to turn off Bluetooth and, even with a low power consumption, we could save even more system resources by turning it off.

So if you want to connect the Galaxy S8 to other devices via Bluetooth, remember to disable the function whenever possible through Settings> Connections> Bluetooth. Or from the shortcuts in the status bar.

Disable Wi-Fi

As with Bluetooth, it’s also easy to forget the connected Wi-Fi antenna, right? This problem will end with the update of the Galaxy S8 system for Android O , but until that happens, we have to do it manually.

The problem of leaving the Wi-Fi antenna always active is that the hardware will be kept on a constant search for connection, so it requires a lot of power.

Therefore, remember to disable the feature when you leave your home or office, for example, by clicking on Settings> Connections> Wi-Fi. Or else, from the shortcuts in the status bar.

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