As we said, smartphones are always on 24/7 and run various services that make the user’s work easier. Therefore, it is not far-fetched to assume that these devices may suffer from hardware failure or software problems and must be repaired occasionally.

In addition, malware and viruses are always lurking to penetrate the device and cause problems for the user if the user is careless. Besides, some people believe that to improve the smartphone’s performance, especially on the Android platform, it is better to return the phone to the factory settings once a year, like shaking a house before the year of delivery!

The topic of this article is not about the technical review of this claim. Still, in any case, some people do such work due to personal or security issues or even intellectual obsession.

Here, the important issue is the deletion of applications, data, and photos, which can happen intentionally by restoring to factory settings, or accidentally, or as a result of repairing and forcing the phone to be flashed.

Also, rumors about WhatsApp eavesdropping were widespread due to the increase in the use of the WhatsApp messaging application. They caused users with important data to look for ways to prevent WhatsApp from being hacked.

Apart from the possibility of flashing the phone or restoring to factory settings and losing application data, especially WhatsApp, another reason for reinstalling WhatsApp, buying a new phone, and migrating to it is that the user must do this by backing up some data. For example, more detailed WhatsApp chats may risk being completely deleted by uninstalling the app.

For example, messages exchanged between parties in WhatsApp are not stored on the server compared to Telegram. As soon as a user sends a message, its packet enters the server to find the destination, and as soon as another user receives the news, it is removed from the server. If the user receiving the message is not online to receive the information, the package sent to the server will remain there for 30 days until it reaches the user as soon as he is online. Still, if the 30 days end, the message will also be deleted.

With WhatsApp’s mechanism, it can be understood that exchanged messages and data are stored on people’s phones. In addition, if the WhatsApp user account is inactive and not online for 120 days, WhatsApp will delete it automatically.

Of course, there are solutions to create Telegram’s Saved Messages feature in WhatsApp, where you can send important information. Then by making a backup, you can access the necessary data yourself.

Above, we mentioned the main common reasons for deleting WhatsApp; If you also want to delete your WhatsApp for any of these reasons, follow the article on reinstalling WhatsApp without deleting information and groups.

Deleting WhatsApp can have two meanings: 1. Delete WhatsApp application 2. Delete your WhatsApp account. Removing each of these has a different method and result. Deleting the WhatsApp application means deleting the WhatsApp application or uninstalling it, which can mean “cancel the installation.” By deleting the WhatsApp application, the WhatsApp user account is not deleted. If someone sends a message to the user, that message will wait on the server for 30 days until it reaches the user as soon as he connects to the Internet and uses the application.

On the other hand, deleting the WhatsApp user account means deleting all information and messages and the user’s mobile number from WhatsApp. In this case, restoring the is impossible, news, and after reinstalling WhatsApp and using the same old mobile number, it is impossible to recover the data.

After learning about the method of transferring messages in WhatsApp and not saving user data on the server and saving it on the user’s phone, we now know that reinstalling WhatsApp without deleting information and groups is to make a backup of the data of this program. Previously, we have explained how to prepare WhatsApp backup in iOS and Android operating systems. Now we will describe how to use jams to reinstall WhatsApp without erasing data and groups.

Once you have backed up your WhatsApp chats and data, follow the steps below to uninstall the WhatsApp app:

• Find the WhatsApp program on the phone’s main screen or in the application drawer and keep your finger on its icon.
• Select “Uninstall” from the pop-up menu that appears. After that, a message will appear: “Do you want to remove the application?” Below is an option to keep application data, which you should select to reinstall WhatsApp without erasing data and groups.

• Open Google Play and search for Whatsapp. Then tap the Install button to reinstall the WhatsApp app on your phone.
• After installation, open it immediately and enter and confirm the phone number with which you created your account.
• Next, a message will appear asking you to restore your chats and files from Google Drive, So tap on the Restore option. If you don’t do this step, you will lose the possibility of reinstalling WhatsApp without erasing information and groups.

• Wait until the process of restoring the backup from Google Drive is completed. Then, tap NEXT, and the old WhatsApp groups and information should now be loaded.

Generally, the most important thing about reinstalling WhatsApp without erasing data and groups is to have a backup of WhatsApp data on the phone. For example, in this method, everything is backed up and saved in Google Drive. Since Google Drive is a cloud file storage and sharing platform, you can successfully reinstall WhatsApp without erasing data by logging into your Google Drive account on any device.

Then, by running WhatsApp without going through the process of setting up the account, the system folders of the application will be created automatically, and now you can put the backup file in your correct address and then launch the WhatsApp application and your account to see the message of restoring WhatsApp information from the file. The backup will be displayed.

The method of restoring WhatsApp information after reinstalling on Android depends on the process of preparing a WhatsApp backup and the steps of transferring the backup after buying a new phone or repairing the current phone and flashing it must proceed correctly so that after reinstalling WhatsApp, it can be done without erasing the data. And groups had access to them.

Reinstalling WhatsApp without erasing it on an iPhone is not much different from the principles of reinstalling it on Android, and the user must make a backup of the application data before deleting the WhatsApp application from the iPhone. In the following, we explain the method of reinstalling WhatsApp without erasing data and groups on iPhone.

There are two ways to make a backup of an iPhone, one is online and storing the jam in the iCloud cloud, which can be accessed on any device connected to the Internet, and the other way is to make a backup without the need for the Internet and through the iTunes program on the computer. It is with Windows or MacOS. Each of these methods has its advantages and disadvantages.

The important thing is to make a backup before deleting the WhatsApp application so that if you buy a new phone or repair and flash your phone, you can reinstall WhatsApp without erasing the data on the iPhone. We assume that you have already made a backup; Now follow the following steps in order:

• By long touching on the WhatsApp application and deleting the application by selecting the Delete App option, you delete WhatsApp.

• Download and install the WhatsApp application from the App Store and launch it after completing the process.
• Enter the phone number with which you created the user account.
• You will now enter a page asking you about restoring chat history from iCloud. Click on the “Restore Chat History” option to load the messages you have backed up.

• In this step, WhatsApp will be reinstalled without erasing the data on the iPhone.

Another method is to reinstall WhatsApp without erasing data on the iPhone using backup through iTunes; the main difference is the backup mechanism. The jam made by iTunes is a general version of all the data of applications and information stored on the phone; Therefore, this method is used when you will flash the phone, or you have bought a new phone; Because by restoring this backup, all programs and information will be overshadowed.

On the other hand, making a backup through iCloud allows you to make a backup only from WhatsApp, and you can easily reinstall it without erasing the data. However, there is another way to back up WhatsApp on iPhone on the computer, done through third-party and unofficial applications.

For example, MobileTrans is a Windows and Mac OS application that allows you to back up and reinstall WhatsApp without erasing data on your iPhone. Also, this program enables transferring chats and backup WhatsApp applications and other applications such as WeChat, Viber, and Line from iPhone to Android.

• Download and install the MobileTrans application and ensure the iPhone is connected to the computer in “Trust” mode. In the app, go to the “Backup&Restore” page.

• Select the application you want to back up. Here, we select WhatsApp.

• The application automatically starts the backup process of all WhatsApp data on the computer. Wait for a while for the operation to complete.

• After completing the backup operation and saving it on the system, a notification is displayed to the user, who can see the list of backups prepared.
• Now you can restore the backup file on the previous or another phone. To use this information, you must first install WhatsApp and then enter the number so that the restore chat history page is displayed and restore them like the previous method. Thus, the reinstallation of WhatsApp will be done successfully without erasing the data on the iPhone.

Other programs can be found for this purpose that have a similar mechanism.

 In addition, MobileTrans allows you to transfer WhatsApp chats from one phone to another at once. Other similar applications include Echoshare, iTransfer, Mobitrix, etc. The responsibility for the security of information and backups provided through these third-party programs lies with the user, and Zomit has not independently evaluated their safety.

Reinstalling WhatsApp with a last number does not have a special process and, like creating a WhatsApp account, requires a mobile phone number and internet connection.

First step: Download and install the WhatsApp program from the App Store or Google Play according to your phone platform.

Step 2: Launch the WhatsApp program after installation and select the country of Iran in the first row so that the international prefix of Iran is displayed. Then, enter your mobile number in the box below and a verification code will be sent to you.

Note that you no longer need to enter the zero number at the beginning of the mobile number, and you can immediately enter your mobile number in the form of 9*********** and click Next.

Step 3: Enter the received code in the displayed box. Be aware that these codes often expire.

Step 4: Now WhatsApp has been reinstalled on the phone with the last number, and you can choose your name if there is a backup of the previous WhatsApp; according to the mentioned methods, to restore WhatsApp account information, go through the Restore steps.

Currently, there are methods that you can use to install two WhatsApp accounts on one phone.

To transfer WhatsApp to a new phone without erasing the data, you can use a combination of the taught methods; So first, make a backup copy of WhatsApp on your previous phone. Be careful that if you migrate from iPhone to Android, you must restore your backup from your Google and Gmail accounts.

After making a backup, reinstall WhatsApp with the new number on the phone and finally restore WhatsApp data on the new phone.