I downloaded the file and it does not open or how to open an unknown file. What should I do if the file does not open

If not all, then many owners of Android devices have encountered errors in the operation of applications: they may either not open at all, or may not work correctly. This, of course, is unpleasant, but each error has its own reasons and methods for solving them. In this article we will understand why applications on Android do not open and how to fix it.

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Why Android applications do not open

The market for Android smartphone applications is growing by leaps and bounds. Such a rapid development has a flip side - too much variety of devices and a huge number of application developers from time to time leads to the fact that applications turn out to be incompatible with certain devices, although developers try to minimize such a precedent. There are also other reasons why applications do not open:

the application does not have enough RAM
android version on your smartphone is outdated for this application
there was a system crash or the application itself

If you installed the application from the official Google Play store, then it has passed the test and is suitable for your device. Otherwise, instead of the “Install” button, it will be written that the application is not supported by your device and you will not be able to download it. If you downloaded the apk installation file and installed it yourself, then there are no guarantees that the application can work with your device correctly or run at all.

What to do if the application does not open

Each Android program has technical requirements; a certain amount of RAM is always required to run it. Due to its lack, the application may not start, since it does not have enough resources. The easiest way to solve this problem is to close the background applications and free up RAM for the necessary program. How to do this, we examined in the article.

There is also a slightly more complicated way - to create a swap file on your SD card using a special application, for example ROEHSOFT SWAPit RAM EXPANDER. The application allocates space on the memory card and uses it to increase the amount of RAM. You need to understand that the speed of RAM memory is higher than that of a memory card. Using the swap file, you can run heavier applications or keep more applications in the background for multitasking, but this will negatively affect the speed and stability of the device. Unfortunately, this solution is not supported by all smartphones. Before installation, check whether your smartphone supports the swap function using the MemoryInfo & Swapfile Check utility, after verification it can be deleted.

To enable the swap file, open the ROEHSOFT SWAPit RAM EXPANDER application and click Activate swap. Below you can choose the size of the swap file, exactly as much additional RAM will be available. The maximum size of such a file is 4000 MB, this is a system limitation.

A large number of applications are developed for fresh versions of the Android operating system, so it is advisable to update the system with the latest available version of Android at every opportunity. To find out if there are updates for your smartphone, open the phone’s settings and select “About phone”. At the very bottom of the section that opens, click "System Update" and check for updates. If there are updates, install them.

Have you encountered such a problem that applications do not start? Write in the comments how you solved the problem with launching applications.

Instruction manual

Almost half of the cell phones produced now are either smartphones or communicators. As a rule, they contain the necessary set of programs, including those that allow you to read pdf files. In this case, all you need to do is copy the file to your mobile using a data cable, infrared port or Bluetooth connection. If this is not the case, download and install the pdf reader on your phone. When downloading the installation file, make sure that it is suitable specifically for the operating system that is installed on your the telephone.

If your mobile is neither a smartphone nor a communicator, use java applications that allow you to read pdf files on the telephone, for example, Mobile PDF. Download it by clicking on the link http://smpda.com/midlets/MobilePDF_v.1.0.0.zip, then unzip the archive on your computer and send it to your mobile phone using one of the methods described in step No. 1. After that, copy the pdf-file to your cellular and open it using the Mobile PDF application.

Use ABBYY FineReader to convert pdf to txt or doc format. Run the program, then add the pdf file to the workspace of the program and start the recognition process, after selecting the document language and the location of the text in the final file. Upon completion of recognition, transfer the result to a MS Word document and save it.

Using the TequillaCat BookReader application, convert the resulting document to a java application. Select the color and font size, as well as the background color, and then start the conversion. Copy the received files to your cell phone, and then run them. You will be able to read the information contained in the source pdf file.

PDF files are documents in a special format. They are actively used on the Internet and due to their compact size allow users to easily exchange information around the world. Adobe Systems also releases special applications for reading documents on mobile phones.

Instruction manual

Visit get.adobe.com, click the link Other Versions. Select the Mobile tab under the heading Choose Operation System, press the Continue key.

Click on the icon of your mobile phone brand under the heading Choose Your Device. Click on Adobe Reader LE 2.5 at the bottom of the screen to select the appropriate application for your mobile device. If the message “This product is not available for the selected device or platform” appears, then your mobile phone model does not support the Adobe Reader application.

Press the Buy Now key to buy Adobe Reader LE 2.5 or click Get Free to try the free version of Adobe Reader before purchasing it. If you selected a trial version, enter your name and email address on the Trial screen. Click the Send Information button. Then click Download File Here to start downloading the free software. Save the file to your computer desktop.

Android application does not open, what to do. If not all, then many owners of Android devices have encountered errors in the operation of applications: they may either not open at all, or may not work correctly. This, of course, is unpleasant, but each error has its own reasons and methods for solving them. In this article we will understand why applications on Android do not open and how to fix it.

Why Android applications do not open

the application does not have enough RAM
android version on your smartphone is outdated for this application
there was a system crash or the application itself

If you installed the application from the official store Google play, then it has passed the test and is suitable for your device. Otherwise, instead of the “Install” button, it will be written that the application is not supported by your device and you will not be able to download it. If you downloaded the apk installation file and installed it yourself, then there are no guarantees that the application can work with your device correctly or run at all.

What to do if the application does not open

There is also a way a little more complicated - create a swap file on your SD card using a special application, for example ROEHSOFT SWAPit RAM EXPANDER. The application allocates space on the memory card and uses it to increase the amount of RAM. You need to understand that the speed of RAM memory is higher than that of a memory card. Using the swap file, you can run heavier applications or keep more applications in the background for multitasking, but this will negatively affect the speed and stability of the device. Unfortunately, this solution is not supported by all smartphones. Before installation, check if your smartphone supports the swap function using the utility MemoryInfo & Swapfile Check, after checking it can be deleted.

To enable the swap file, open the ROEHSOFT SWAPit RAM EXPANDER application and click " Activate swap". Below you can choose the size of the swap file, exactly as much additional RAM will be available. The maximum size of such a file is 4000 MB, this is a system limitation.

A large number of applications are developed for fresh versions of the Android operating system, so it is advisable to update the system with the latest available version of Android at every opportunity. To find out if there are updates for your smartphone, open the phone’s settings and select “ About phone". At the very bottom of the section that opens, click " System update»And check for updates. If there are updates, install them.

Updating the Android version in this way is not possible on all devices, in some cases you will have to check for updates on the developer's website of your smartphone and install them through a connection to a PC.

If at first the application worked properly, but at some point it stopped running or began to crash, most likely an error occurred in the application itself. To start, try restarting it. Just minimize the application with the “ Home"Is not enough, it will continue to work in the background. You need to go into the device settings, select the “ Applications", Click on the necessary and close it. If this does not help, you need to either clear the cache and application data, or reinstall it. Read more in the article.

Surely every situation in life happened when the file you need didn’t open on your computer for some reason. Suppose you were sent some important document or presentation by mail or you downloaded a book from the Internet that you had wanted to read for a long time, but you cannot open it. In such cases, a reasonable question arises as to why the file does not open, which we will try to answer in this article.

Find out the file extension

If you don’t have a file open, then the first thing to do is find out the file type:

Open the folder with the downloaded file on the computer.
Right-click on the file you are interested in and select "Properties."
In the "General" tab, in the "File Type" column, its type and extension will be indicated.

Now you can go directly to solving the question of why the downloaded files do not open.

The lack of the necessary program on the computer

The most common reason why files on your computer do not open is because you don’t have a program that can read them. Search the Internet for information on which program can open a file with the specified extension. For example, such popular text document formats as .doc and .docx will open only if you have one of the versions of Microsoft Office Word installed on your computer, and you need to use Adobe Reader to open the document in pdf format.

File was damaged

Another reason why the file may not open is the presence of corruption. Such problems occur when the file is not written to the external media correctly or when it is saved to the computer. It is usually impossible to repair a damaged file. There are special programs that serve to restore files or at least partially restore the information contained in it, but they are ineffective. The easiest and most obvious way to fix such a malfunction is to delete the file and write it again. If we are talking about any Windows system file, you can try to repair the damaged files by fixing errors with the built-in operating system tools.

File Association Violations

On any computer running Windows or Mac OS X, file associations exist according to which each type of file is opened by a specific program. Such settings are set by the system by default. However, sometimes file associations are broken.

Those who have a question why exe files do not open, probably just faced such a problem. In order to eliminate such a violation, it is necessary:

Run the registry editor on the computer. To do this, run the "Run" utility and enter the "regedit" command in the window that opens.
In the window that opens, on the left you will see a directory. Follow the path HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Windows \\ CurrentVersion \\ Explorer \\ FileExts.
Then, in the list of extensions that opens, select the file type you are interested in (in our case, exe) and delete the user choice folder.
Next, you will need to download from the Internet and run on your computer a reg-file, which is responsible for restoring associations of this type of file and the problem will be fixed.