Live wallpaper showing battery level. Black desktop wallpapers will help save your Android device's battery. Remove apps running in the background
It all depends on the type of smartphone display, and specifically on the backlight used in it. In all kinds of TFT, including TN and IPS, there is a general constant backlight, that is, each pixel is always backlit, regardless of its color. Accordingly, even if the pixel shows black, it still glows. With these types of displays, setting black wallpaper will not help, but reducing or automatically adjusting the brightness will save battery power.
OLED displays work completely differently. They do not have a common constant backlight; each pixel glows on its own. From your physics course, you know that black color is the absence of light, and therefore in OLED displays the pixel is simply turned off to display black. When a pixel is turned off, it does not consume power. Accordingly, the more black pixels on an OLED display, the less battery power it consumes.
The Always On Display mode, which Samsung and LG so actively promote in their products, is precisely a combination of a black display and minimal brightness, which allows you to constantly display basic information on the screen without noticeable damage to the battery charge.
How to find out your smartphone's display type
You’ll have to use all your online information search skills and google a query like “[smartphone model] display type.”
Now OLED displays are already quite popular. They are used in almost all Samsung models and many from other manufacturers. Notably, even Apple plans to switch all future iPhones to OLED displays by 2019.
How to make and install black wallpaper
In any sane graphic editor create a PNG file with a solid black fill. The height of the image should be equal to the number of vertical pixels of the smartphone display. The width is twice the number of horizontal pixels on the display.
For example, if the display resolution is 720 × 1280 pixels and you are using a standard five-screen launcher, then the wallpaper resolution should be 1440 × 1280 pixels. If the display is 1080 x 1920, then the wallpaper should be 2160 x 1920 pixels.
Copy the created graphic file into your smartphone's memory and set as wallpaper.
How much battery do black wallpapers save?
A practical test showed an increase in smartphone operating time by 20–30% with the home screen always on.
Agree that live wallpapers should not only bring aesthetic pleasure, but also at least fulfill some useful features, such as displaying battery charge or clock. The live wallpaper under the name offers you a beautiful marine view, as well as a convenient battery indicator that will be in a prominent place.
The first thing worth noting is high quality wallpaper On a tablet, everything looks just as rich and bright as on a smartphone, which is good news. As you may have noticed, you can see a piece of the sky, and you can also see the depths of the sea, where a fairly large number of fish swim. The sea level will automatically change depending on the battery condition, i.e. when the charge is 90%, you will only see a piece of the sky, and the rest will be occupied by water. At 20% battery, the situation will be completely different: the rock will already be peeking out of the water, the sky will be clearly visible, and the water level will drop almost to the very bottom. It’s convenient that you can determine the condition of the battery not only by the number of percent that can be removed, but also by the water level, which is very unusual and even convenient. The fish actively react to your touch and immediately swim away as soon as you touch them.
In the settings, you can turn on/off the display of battery percentage, the reaction to double-tapping the screen and the reaction to touching the water, and also adjust the number of fish in the water. Let's summarize: - beautiful and very convenient live wallpapers that serve not only as decoration, but also as a battery indicator. Enjoy!
Today we will talk about how to choose wallpaper for your desktop Android Wallpapers to save battery power. Unfortunately, most users have no idea that wallpaper color can affect how quickly your battery drains. But pure black wallpaper or a generally dark background on your home screen can actually save you a lot of time battery life. And I will now explain why.
I'll have to start with brief overview technologies underlying the displays of modern mobile devices. We won’t delve too deeply into this issue, but if you are not at all interested in this and you just want black wallpaper, then almost at the very bottom of the article you will find a link to the required file.
LCD displays
LCD is an abbreviation that stands for Liquid Crystal Display - liquid crystal display, also known as LCD. You will find such displays not only in mobile devices, but also in many TVs, monitors, etc. As the name itself suggests, such a display is a crystal, therefore, it does not emit light itself, but only transmits it from a source that is located behind it.
This means that even when you look at black areas on your device's screen, you are actually seeing "black light" coming from a source behind the display. Because of this, LCD displays never display “true” black. This may be familiar to those who have a Nexus 5, LG G3 or, say, an Xperia Z3.
It is precisely because of this feature that LCD displays significantly “devour” the charge of your battery, because Every pixel of the screen must be constantly illuminated.
AMOLED and OLED displays
AMOLED is also an abbreviation that stands for Active Matrix Organic Light Emitting Diode. This can be translated as "organic light-emitting diode active matrix". Such displays are also used for the production of televisions, but much more often for smartphones. OLED displays are essentially the same, just without the use of an active matrix.
For example, most Samsung devices are equipped with AMOLED displays, in particular, devices from the lines Galaxy Note and Galaxy S. The LG G Flex 2 uses an OLED display with an interesting feature: it is made of plastic.
As the name suggests, an AMOLED display is made of an organic material that emits light when current is passed through it (an effect based on the phenomenon of electroluminescence). Therefore, gadgets with such screens show us “true” black color, because in this case there is no illumination of the black areas.
This also means that AMOLED displays don't suck up your device's battery life as much - because not all pixels are necessarily backlit all the time.
Comparison of AMOLED and LCD technologies
You probably already understand what I'm getting at: if on your mobile device If you have an AMOLED display installed, then you can save some of your battery power for more important things by just using black wallpaper or just in general dark themes for desktop decoration.
The guys from the famous XDA Developers forum specifically conducted a small experiment and found out that in this way you can save about 6% of the battery charge at 20% screen brightness and up to 8% at full brightness.
These results were obtained using devices with an always-on screen, so in other operating modes it may be possible to save even more energy. For example, another researcher, using a different method of "booting" the device, was able to save up to 18% of battery power per day.
What should users of devices with LCD displays do, you ask? Unfortunately, as I explained above, the LCD is always backlit, so changing the wallpaper won't help you.
The only thing you can do is install some energy saving app and set reduced brightness your display.
On the other hand, there is a small advantage to owning a device with an LCD display: you can set bright, colorful wallpapers on your home screen and this will have virtually no effect on the battery life of the gadget. So you can look down your nose at the gloomy AMOLED displays (just don't run too far from the outlet when you gloat
Although, if you have a black phone, then dark wallpapers can look very stylish.
And one more power-saving tip for devices with AMOLED displays: set the darkest themes for most applications. By changing this way appearance most frequently used apps, you'll be able to save even more battery power since, after all, you don't spend all day staring at your home screen: email clients, instant messengers and social networks take up much more time. Those who like extreme options can, for example, try setting a black background and white letters in the application that you use to send and receive e-mail messages.
The easiest way to determine for yourself the usefulness of all these tips is to fully charge your device and, when it is almost completely discharged, pay attention to how much of the battery charge was consumed by the display. To do this, go to Settings => Battery.
Note what percentage of your screen was used, after charging the device, change the wallpaper to black and after charging again, evaluate the difference.
You can also reduce screen timeout, enable power saving mode, disable automatic setup screen brightness and see how much it saves you battery life.
Of course, it's not just the display that's draining your battery, so final results This "charge saving operation" will depend on your phone usage habits, processor brand, and other variables, but it's still going to save you something worth saving.
Did our tips help you extend the battery life of your device? Do you have any other tips for preserving battery life? We look forward to your comments on this issue.
The disadvantages of smartphones running operating system Android is traditionally considered to have low battery life. This is due to the use of large displays in such devices.
diagonal and high-performance, and therefore energy-intensive processors. So far, none of the Android smartphones can last offline mode more than one day subject to active use.
Today, perhaps, only developers do not want to admit that Android communicators have problems with autonomy. For example, Google CEO Larry Page said: “If a device is Android based is not able to work in offline mode for even a day, then you need to look for the reason in the hardware.”
Thus, if you follow Google’s logic, there are hardware flaws in almost all Google phones. After all, many flagship phones with active use they are not able to work for even eight hours. Let's take for example HTC Desire. Like all modern Android devices, this model does not have a sufficient level of autonomy.
Let's do a little research and see how effective the numerous tips that the Internet is replete with today will be. As practice shows, the vast majority of so-called “secrets” do not carry any practical benefit. Let's try to figure out how true the most popular of them are?
Automatic brightness adjustment
Myth: Setting the automatic brightness adjustment function in the screen settings saves battery power.
How does automatic brightness control work? All modern Android phones are equipped with a light sensor that monitors the intensity of ambient light and gives the appropriate command to set the display brightness.
How automatic installation Does brightness affect battery life?
No automatic brightness control: In this mode, the light sensor readings do not affect the display brightness, which remains constant.
With automatic brightness adjustment: the light sensor detects changes in ambient light parameters and sends a signal to the processor, which in turn controls the brightness of the screen.
How does the battery behave? When the automatic brightness control function is turned on, the battery charge decreases quite rapidly. This happens because data from the light sensor is constantly transferred to the processor, which is forced to process it.
What can be done to increase the autonomy of the communicator? Install the standard Power Control widget and display it on your desktop. If you need to quickly change the screen brightness, you can click on the sun icon and select the desired backlight level. Although, when using a smartphone outdoors, it is still more convenient to use automatic adjustment.
Myth debunked!
A certain sequence of charging cycles can significantly increase the autonomy of the phone
Myth: in response to a complaint from one of the regular members of the XDA forum to HTC technical support regarding , company representatives suggested that he produce , which supposedly should provide increased autonomy for the communicator.
- We charge the device for 8 hours in the usual way.
- Turn off the device completely and charge it for an hour.
- Turn it on again, wait 2 minutes, turn it off and charge for another hour.
At the same time, it is claimed that the battery capacity should almost double and many users even felt the difference.
Does it really work? No matter how pointless it may sound, but this method really works. This can be judged by numerous reviews on the XDA forum, in which users claim that the procedure described above really increased the autonomy of their communicators.
The myth is confirmed with a high degree of probability!
Live wallpaper
Myth: Using the Live Wallpapers feature drains your battery very quickly.
What is live wallpaper? Live Wallpapers are wallpapers with added animation/motion and give your smartphone desktop an absolutely gorgeous look.
Does their use really affect the battery charge much?? Yes! To draw the animation, the wallpaper uses the resources of both the processor and the graphics core, which is certainly reflected in the battery charge level.
How much is reflected? In most cases, live wallpapers “eat up” no more than 2%. Live wallpapers do drain the battery, but this will not stop many users, because the visual effect of their use is worth it. However, it has been noticed that some themes drain the battery significantly more. You can check the degree of influence of live wallpaper on the charge in the settings (Settings > About > Battery > Battery Use). If this parameter for live wallpapers does not exceed 5%, you can not refuse to use them.
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What should I do? Enjoy the visual beauty of Live Wallpapers, knowing that iOS users are deprived of this feature.
Myth debunked!
Automatic update
Myth: Change the automatic application update function to manual mode helps preserve battery charge.
How it works? Programs (twitter client, HTC Weather widget, various email and RSS clients, and others) constantly search the Internet for information. They use Wi-Fi, 3G or GPRS.
Does this affect the battery charge level? Of course, receiving data via Wi-Fi/3G has a negative impact on battery power. Moreover, if data transfer sessions occur frequently enough, the battery will drain extremely quickly.
What should I do? Of course, it would be stupid to completely disable the update, because then the whole point of using the smartphone would be lost. We just need to make this process more efficient.
If you are a fan of communication in social networks and can't live without regular communication on Facebook, Twitter or receiving Email, you can, without turning it off, set the frequency of downloading updates to a more economical mode. The optimal period in this case would be from 4 to 8 hours. The most economical mode will be to update the status only when working with Twitter/Facebook clients.
Myth confirmed!
Using special software to close programs
Myth: Close (unload from memory) unused applications can increase the battery life of your phone.
There are two different approaches to this issue. Some believe that deleting unused applications can significantly increase the autonomy of the device, while other users, on the contrary, are of the opinion that this should not be done.
How to close programs? There is a special type of software called task killers. These are small utilities designed to unload processes that the user does not need from memory. They work similarly to the task manager in Windows, showing a list running applications and offering to unload unnecessary ones.
The idea behind such programs is to free up busy random access memory. A similar approach is relevant for the Windows environment, because we all know that when large quantities running applications any Windows system will "slow down". In the case of Android, this statement is not entirely true.
Why can Android do without such programs? In answering this question, we will refer to data from the Geek For Me resource.
- If there is a need to free up additional memory, the Android operating system itself can terminate unused tasks.
- Android automatically terminates a task if it has not been accessed for a long time.
- Most applications running in background, occupy a minimum of memory.
- Shutting down some processes generally has a number of unexpected side effects, expressed in the absence of incoming text messages, missed event notifications, etc.
- Many applications may terminate when you press the back button for a long time.
What should I do? Allow the operating system to handle tasks and processes on its own. You should beware of programs such as Advanced Task Killer and only use them if applications are not working properly. By the way, in Froyo (Android 2.2) the functions forced termination There are no applications provided at all.
Myth debunked!
Using live wallpapers adds pleasant variety to the smartphone interface. Some of the live wallpapers are quite interesting and nice to look at. But since live wallpapers are constantly moving, many users believe that they drain the battery. If you want to continue using live wallpapers, then you need to follow a few simple recommendations. However, the reason for the increased power consumption of the phone may be not only live wallpapers, but also some other devices, the existence of which new users of the operating system Android systems They may not even know.
These recommendations were given in the note “Do Live Wallpapers Drain Battery?” published by the Gadget Archive resource. Of course, these recommendations will be useful primarily to those users who recently acquired their first smartphone. Experienced Android users, most likely, know this and much more about how to reduce the energy consumption of your phone and, as a result, charge it as little as possible.
1. Use live wallpapers with reduced power consumption
If you don't want live wallpapers to drain your phone's battery too much, use only those wallpapers whose description says they have reduced power consumption.
2. Manually adjust the minimum comfortable screen brightness
The brightness level of the screen also affects how long the phone will last before it needs to be charged again. If the brightness level is too high, your smartphone's battery will run out faster. You can also stop using automatic adjustment Brightness, which involves the phone itself determining its brightness level based on how bright the light is around it. This excellent smart feature also consumes a lot of power. Thus, by setting the screen brightness to the minimum comfortable level and turning off automatic brightness adjustment, you will reduce the overall power consumption of your phone.
3. Disable automatic update applications
It is also advisable to disable automatic update functions for applications installed on your phone, since these functions also drain the battery of your smart digital device. Such simple and familiar things as automatic updating of Facebook, Twitter, mail application and other software tools, consume energy, perhaps even more than any of the applications.
Should you use live wallpapers at all or is it better to abandon them completely, thus saving energy in your phone battery?