What happens if you clear the dalvik cache. A wipe is always necessary! Cleaning using system tools

Many sources claim that before installing custom ROM for example, you need to do wipe system, although there is also the opposite opinion. How to be in this situation? There is only one answer: the first option is correct. Why is that? Let's try to figure it out.

Wipe aims to clear sections of your device's memory. The operation leads to both the loss of personal data and the loss of downloaded applications. System applications, on the other hand, get their initial state. It turns out that wipe returns your device to the state in which you bought it.

Here are some of the different wipes and a short description of them:

Wipe data / Factory reset: in this case, all your personal data will be deleted, and the system will return to its original form.

Wipe Cache Partition: This action deletes the cache. With this method, no personal data is lost.

Wipe Dalvik Cache: all your programs are in the Dalvik cache directory tree, wipe affects him, while personal data remains intact.

Which wipe in which case to apply? What is its meaning?

If you install a new ROM without committing wipe, then there is a lot of "garbage" from the old system, which leads to unstable work of the new one. You get a bunch of errors, crashes and other problems. For this reason wipe is always necessary.

Let's now consider which wipe to use in which case.

When you install a new one custom ROM, but before that we used the stock firmware, it is worth using the first option - " Wipe Data". It is also necessary when moving from one version to another, for example, from to.

If we are talking about small updates, for example, you move from CyanogonMod 9.0 To CyanogenMod 9.1 or install, then you need to apply " Wipe Cache Partition" and " Wipe Dalvik Cache".

This, in fact, is all. Now you know that wipe helps to solve many problems associated with custom ROMs... If, after installation, a bunch of errors appear in the system, then you can easily eliminate them. If wipe does not help, then you need to use the "" option in the recovery mode. We hope that now questions on the topic to do wipe or not, you won't.

Let's figure out how to clear the cache on an Android phone, and whether it needs to be done. In the process of using a smartphone running the Android operating system, a large amount of different data accumulates on the mobile device, which is stored for different purposes.

Part of the data is stored in a special area of memory - the cache. For example, the browser saves data about the sites visited, and upon a new visit to this site, the browser will open copies of the site pages stored in the smartphone's memory, without downloading all the data from the Internet. Due to this, the loading time of web pages is reduced, they open faster, and traffic and time are saved.

Applications installed on a mobile device store some data in the cache memory: local copies of photos, thumbnails of images, information about the operation of applications, local copies of visited pages on the Internet, game files, etc. During the operation of the operating system and installed applications, the cache stores information that can be used again on the mobile device. In general, this is a useful feature to help you quickly access data that is being reused.

On Android devices, three types of memory are used:

Dalvik cache - Dalvik virtual machine cache containing application files for faster startup. This type of cache is automatically recreated on the device.
System cache - located in the internal memory of the device. This is where the data for applications built into the Android operating system is located.
Application cache - data from third-party applications downloaded from the Google Play Market. By default, this data is saved in the internal memory of the device.

Along with the obvious benefits of the cache memory on a smartphone, this has some negative consequences: the data saved in the cache takes up a significant amount of space in the internal memory of the device. Because of this, with a limited amount of internal memory, there is a lack of free space on the device.

A significant part of the internal memory is occupied by the Android operating system itself, and if the internal memory of the device is small, then the free space will not be enough, with the active use of the gadget. When you try to install a new application, or perform other necessary actions, the system will inform the user about the lack of memory on the mobile device. Some programs store large numbers of cached files in memory, which take up significant disk space.

One way to solve the problem of free space is to transfer third-party applications to the device's external memory to free up the internal memory. Starting with Android 6.0, the operating system has implemented the function of transferring application data to external memory. Application data is saved on the smartphone's memory card, freeing up space on the device's internal memory.

In earlier versions of Android, you can transfer programs using third-party applications that require root rights. In this case, the further performance of the transferred programs is not guaranteed.

To solve the problem, use the most optimal option: clear the cache on the device. In addition to freeing up space, clearing data from the cache can help when an application crashes. Some of the files stored in the cache will no longer be needed, because the user may rarely use some programs on his mobile device.

What does it mean to clear the cache on Android? This means deleting all previously saved data from the cache used by applications on the phone. This operation will not cause any harm to the Android OS or installed applications. Additional information will simply be deleted from memory, the programs themselves will remain in place.

There are four ways to free the internal memory of cached data on mobile devices:

deleting the entire cache with a system tool;
clearing the cache in a separate application using a system tool;
deleting the entire cache on a smartphone, or clearing cached data in individual applications using a third-party program;
resetting the mobile device to factory settings.

In this article, we will look at how to manually clear the cache on Android: delete the entire cache, or cached data from a separate application. To remove the cache, the user can use third-party programs from the Google Play store, for one of these programs there is an instruction in this article.

After a factory reset, all previously installed applications will be deleted from the memory of the mobile device, and no cached data will remain on the smartphone. This method is used when problems arise on the smartphone, if it is not possible to correct the situation in other ways. In this case, clearing the cache is an added bonus.

How to clear all cache on Android with a system tool

The user can delete all cache from the device using the built-in tool of the Android operating system.

Follow these steps on your Android device:

Go to Settings, choose Storage or Storage, depending on your Android version.

In the "Storage" window, click on "Cache data".

In the pop-up window asking "Do you want to clear the cache?", Click on "OK". After that, all cached application data will be deleted from the mobile phone.

How to clear the cache of applications on Android

If necessary, the user can remove the cssh of individual applications installed on a smartphone or tablet. In this case, only the data of this application will be cleared.

Enter "Settings", select "Applications".

Select the required program from the list of applications.
In the program window, click on the "Storage" parameter. In older versions of Android, this window contains the "Cache" section, in which you need to click on the "Clear cache" button.
In the application storage window in the "Cache" option, click on the "Clear cache" button.

If necessary, repeat the operation with another application installed on Android.

Clearing Dalvik cache in Recovery mode

In order to perform Wipe Dalvick Cache, you need to go to the Recovery menu. To enter Recovery mode, find out the key combination suitable for your device, because the keys can be different.

Usually, the simultaneous pressing of two keys is used: increase / decrease the volume and turn on / off the smartphone.

I am explaining how it works on my phones.

Turn off your smartphone.
Enter Recovery Mode by pressing the corresponding keys of the mobile device.
Use the volume down key to reach the "Wipe cache partition" item.
Press the shutdown key of the smartphone to confirm the deletion of the Dalvik cache. Another option to confirm deleting Dalvik cache: press the volume up key.
A message about clearing the cache appears at the bottom of the screen.
Then select "Reboot system now" to exit Recovery mode: press the power off key of the smartphone or the volume up key.
The smartphone will start normally.

Attention! Do not confuse it with the item "Wipe data / factory reset", otherwise all data will be deleted from the smartphone, the device will be reset to its original state.

Removing the cache using a third-party application

Now let's see how to clear the cache on the phone using third-party software, using the example of the most popular program for cleaning data Clean Master. The program can be downloaded from the Google Play Market, the Clean Master application supports the Russian interface language.

Open the Clean Master app on your mobile device. If the program in its window warns that unnecessary files have been found, click on the "Clear" button. If there is no warning, click on the "Trash" button yourself.

After scanning, the program will offer to delete unnecessary data. The Clean Master window will display detailed information about what exactly will be removed from the gadget, the size of unnecessary data is indicated.

The user has two options for actions: immediately delete the entire cache, or first uncheck the boxes next to those applications whose data should not be deleted.

Click on the "Empty trash" button.

If the Clean Master app for freeing up phone memory is not suitable for you, use another similar program.

Conclusions of the article

If the question arose of how to clear the cache on an Android smartphone, the user can use the built-in functions of the operating system, or rely on the help of third-party software. Using the Android system tool, you can clear the entire cache on a mobile device, or delete the cached data of individual applications, third-party programs similarly delete the entire cache, or only the cache stored in individual applications.

Many inexperienced users of devices with the Android platform come across such a concept as a cache, without even knowing what it is. We will help you figure out what a cache is on Android and how to use it on a device. A cache is a special area that is located in the operating room or in the internal memory of a gadget, on a flash drive, and is designed to store certain information. For example, no high-quality modern game for Android is provided without a cache. It is located in the memory of the gadget and contains video recordings, music files, graphic elements, in a word, all the data related to this game. By the way, the accumulation of a large amount of information leads to the fact that the device starts to work incorrectly: all actions are performed slowly, errors appear in applications, and they stop working, etc. Therefore, unnecessary files must be cleaned regularly, having previously understood their purpose.

Cache types

Android cache is divided into three different types:

Dalvik-cache;
System applications;
Custom applications.

What is Dalvik-cache? It is the memory of a special register machine (virtual) called Dalvik. It is located in the system code, and its purpose is to execute programs. For Dalvik-cache, a separate section is provided in the built-in memory of an Android tablet or smartphone.

The system application cache is also located in the built-in storage of the gadget. Its specific location is the / cache directory. This type of cache is responsible for a huge amount of data related to the operating system. If you clean it, the functionality of the device may suffer as a result.

What is the cache of user applications is the data of all games, programs, tools, in a word, all the software that you installed on your smartphone or tablet yourself. Moreover, it can be located not only in the built-in memory of the device, but also on the SD card - it all depends on the characteristics of a particular application. Can I delete the cache? As a rule, the elimination of this data does not cause any harm to the operating system and the device as a whole. Cleaning is carried out in several ways: in manual mode for each application separately or using special programs.

How to install cache on Android

It should be noted that the very concept of "install cache" cannot be called correct, although many users use it all the time. The thing is that only the installation file is subject to installation, which, in fact, is why it is called that. For the Android operating system, it has the .apk permission. As for the folder with the cache memory "cache", which comes as an add-on, the files contained in it, you just need to place in the appropriate directory of the mobile device.

If you download a game from the Google Play application store, then all these operations take place automatically, all you need to do is click on the "Download" button and wait for the download and installation - the system itself will place the cache files in the right place.

Another option is also possible - downloading and installing software from unofficial sources. This requires downloading .apk and additional cache files. It is very important that they correspond exactly to the model of your device, otherwise the application may simply not start. Most often, sites indicate specifically for each application how the cache should be installed correctly, and in which section of memory it is located. The cache is packaged (in the archive). It is enough just to unpack it using any archiver into the specified directory. As a rule, it is located in the Android / obb section, but there may be other options.

It is not necessary to download files via a mobile device. You can use a simpler method: download all the necessary data through a computer, and then simply copy or move them to the memory of a smartphone or tablet by connecting the gadget to a PC in any convenient way.

It happens that the description for the application does not indicate the correct location. In this case, it is recommended to proceed as follows. Download the .apk, run it to start the installation. In this case, a folder for additional data should automatically appear in the desired section of memory - here you need to place the cache files.

How to clear cache on Android

Let's figure out how to clear the cache on Android and should we do it at all? Can ordinary files with music, video, etc. cause any harm to the device? They can, and what else! The thing is that the cache itself does not disappear anywhere, it accumulates in the phone all the time, clogging up its memory. This, in turn, leads to numerous problems. Firstly, applications start to work incorrectly, errors often occur, programs close by themselves, slow down, etc. Secondly, the performance of the device as a whole is significantly slowed down, the amount of free memory is significantly reduced.

Ways to clear the cache on Android:

Through settings;
Using a dedicated application;
By resetting to factory settings.

Clearing the cache through settings cannot be called a convenient and fast method, since the same procedure must be done for each program separately. How it's done:

Go to the device menu.
Open the settings.
Select the "Applications" section.
Select the game or program you want to delete and click on it.
The screen will display all the technical information regarding this program, as well as the "Clear cache" button. Just click on it and all files will be deleted.

The second method is the fastest and most convenient. On Google Play, download any program that cleans up the gadget's memory from all kinds of garbage. The most popular are CCleaner, Clean Master, App Cache Cleaner. It is enough to install it, run it and start searching for unnecessary files. All such utilities work according to the same principle, just some are better at the task at hand, some are worse. The program will finish the search and offer to get rid of information waste. In this case, you can select the files that you do not want to delete, customize the application as you see fit.

Factory reset is only suitable for those users who need to completely update the system, get rid of all programs, files and other things. The reset button is located in the device settings.

Summarize

Clearing the cache memory on Android is a mandatory procedure that needs to be done regularly so that a smartphone or tablet always pleases with its speed and high performance. This is done very simply, while effectively affecting the operation of the device. We hope we helped you understand what cache memory is on Android devices.

Don't have enough memory for your favorite song? - Clean your cache! But first you need to figure out what exactly needs to be deleted, which cache to clean.

Types of cache memory

In Android devices, as in almost all mobile devices (smartphones, tablets, etc.), there are three types of intermediate memory. Each type stores some kind of data.

Dalvik-cache. This type stores intermediate data of the virtual machine, without which the device cannot work. This machine is located directly in the operating system code and is responsible for the correct operation of almost all applications on the device.
System application cache. This is exactly the type that takes up your blood internal memory on the device and is located in the folder / cache. This cache is responsible for the operation of the operating system and, if cleaned, your device may malfunction, so be extremely careful.
User data cache. When you install a new application, it automatically creates a so-called "partition" in intermediate storage. This section stores your achievements (if it's a game), logins / passwords, in other words - all the information that is used by the application is stored there. As a rule, clearing this type of cache is harmless for the device, but some user data can be deleted, for example, the application login and password can be deleted.

There are several ways to clear any type of cache - memory, let's figure it out with the main options.

Cleaning through the application manager

This method will help clear the intermediate memory of user data, but not all, but one specific application.

We go to the device settings - "Applications".

Cleaning with a programClean Master

There is a special program for cleaning any of the types of intermediate memory and this program is. Moreover, it is worth noting that this application is developed for different platforms, in other words, it works both on personal computers and on various mobile devices.

So, let's install the program. We launch, and four buttons will appear on the screen, which are responsible for clearing the cache, antivirus, application manager and working with memory. We are interested in the "Junk files" button, it is she who is responsible for clearing the temporary memory. Within a few minutes, the system will generate a list of those files that need to be deleted. Carefully read this list so as not to lose the files you need and click "Clear".

The application will completely clean up unnecessary files, and you can notice the addition of free space on the internal memory of the device, which will allow you to download your favorite song.

Well, I hope this article has given you an idea of what cache memory is and how to clean it up without consequences.

One of the most popular operating systems today is Android. It is installed on millions of mobile devices. The system is a collection of folders and files that make it work. But have you ever wondered what will hold in each folder? Some are quite heavy, so the hand is trying to remove them. Before doing this, you should definitely familiarize yourself with what each folder is responsible for and, as well as how important it is for the operating system. We will also tell you what are the ways to delete an unnecessary folder.

Main key directories in android operating system

The first task before deleting is to find out what the directory contains, because it depends on this whether you can delete it or not. If you mistakenly erase important files, you can not only disrupt the operation of any applications, but also lead to a complete inoperability of the entire operating system.

It is worth noting that the list of folders may differ depending on the device and android system version. Also, specific applications can create their own folders in the phone memory on Android. Let's consider what directories are available in Android.

Cache is a folder for storing temporary files. It may contain a system update. If you are not going to update to a more recent version of Android, then you do not need an update file. You can delete this folder, and in some cases even need to.

Data is one of the largest catalogs, which, as the name suggests, contains a variety of data. This includes account data, information about saved passwords, Wi-Fi hotspots, and more. Since this folder contains a lot of information, consider its subdirectories:

App is a directory that contains installation files for various applications. You can delete it if you do not need all the applications downloaded to your phone;
Data - includes settings, saving and other service information necessary for the operation of specific applications. If there is no data important for you in the applications, you can also delete it;
Clipboard is a dedicated clipboard that also contains the latest screenshots. You can delete this folder, but not recommended;
Dalvik-cache is a cache area for a program called Davlink. This application is a Java virtual machine that allows the phone to run application apk files. To speed up this process as much as possible, files are created in the cache memory. It is recommended to clean the contents regularly, but you should not delete dalvik-cache.

The efs folder contains information about the phone's serial number (IMEI), MAC address, Bluetooth and Wi-Fi. This directory cannot be deleted. Moreover, it is recommended to make a backup of this folder, as deleting it will lead to the loss of the unique number of your smartphone.

The etc directory - contains configuration files, mainly used during OS boot, processes of various programs, for example, to determine the location by GPS. This is one of the system directories and cannot be deleted.

Lib directory - it contains various libraries necessary for the correct operation of the functions of programs and modules. Also, this folder contains files that ensure the operation of drivers. You cannot delete it.

Mnt directory - contains images of mounted systems. Partitions of an installed memory card, internal memory, or other virtual devices can be located here. Naturally, you cannot delete this directory either.

The proc folder - it contains all the key information regarding the installed Android OS: information about the kernel, configuration parameters and hardware. All existing files and folders are virtual and weigh zero bytes. The system automatically creates them when the user accesses them. This folder cannot be deleted as a standard user.

The sbin directory is one of the key folders required for the phone to work. It contains executable files of all programs designed to manage the system. Therefore, you cannot delete it.

The sys directory contains the current system configuration. This is a dynamic directory. The information in it is constantly changing. You cannot erase this folder.

The system section is the "backbone" of the entire operating system, since it is in it that all the files are located, without which android is impossible to work. The System directory (like any other internal directories) cannot be deleted. For acquaintance, let's take a closer look at the contents of this directory:

App - system wallpaper, standard applications (calendar, notebook, SMS) are in this folder.
Bin includes executables and links;
Build.prop contains a huge number of settings over the phone, for example, how long the sensor is delayed after pressing, what is the screen density, and more;
Fonts - Information about all stock fonts supported by the phone.
Framework - everything that is necessary for the interface, in particular icons, curtains and other graphic elements;
Lib - application library;
Media - all standard melodies and sounds (alarm clock, SMS notifications, call melodies);
Tts includes language packs.

Documents - a folder that can contain various documents, in particular .doc and .pdf files. If you are not interested in the contents of the folder, you can delete it.

Bluetooth - contains all files received by the device via Bluetooth. If there is no important data in it, it can be deleted without problems. It can be located not only in the internal memory, but also on the SD card.

DCIM is a special directory for saving photos taken with your smartphone's camera. As a rule, it includes a Camera section, which contains all the photos. If the photo you need is not on your phone, you can delete it. Sections such as Pictures, Images, Audio, Music (if there are no important files inside) can also be deleted.

Removal methods

How can you delete a specific folder? The first way is to use the standard functions. This requires: