Changing a mobile number is a procedure that sooner or later affects every smartphone owner. If you purchased a new SIM card, moved to another region, or simply decided to change your operator, a reasonable question arises: what to do with the messenger? Many users mistakenly believe that in order to switch to a new number, they need to delete the old application and register again, losing their entire correspondence history and group settings.
Fortunately, the developers WhatsApp have provided a built-in number change function that allows you to migrate your account without losing data. This process automatically transfers your message history, media files, and privacy settings to the new number. Moreover, participants in your group chats will see a notification about your contact change, which will eliminate the need to write to everyone personally.
However, the procedure requires some preparation, especially if you are using a dual-SIM smartphone based on Android. An incorrect sequence of actions can lead to the old account being blocked and a new one being created from scratch. In this article, we will analyze in detail each stage of changing a number, consider possible pitfalls and answer frequently asked questions from users.
Preparing the device and SIM card for changing
Before you start making settings inside the application, you need to make sure that the device is physically ready. It is critical that the new SIM card is already installed in your smartphone's slot and is active. The messenger must be able to accept an SMS confirmation code or an incoming call for verification. If you are using a phone with two slots, make sure that the new SIM card is inserted into the main slot or is selected as a priority for data transfer.
It is also highly recommended to create a backup copy of your data before starting any manipulations. Even though the number change feature is designed to be secure, having a fresh copy in Google Drive will be your insurance in case of unexpected network failures or synchronization errors. Go to your chat settings and click the "Backup" button to save the current state of your conversations.
Check if you know the password for your Google account linked to your phone. In some cases, the system may request re-authorization when the key account identifier changes. Make sure that the balance of the new number has a minimum amount of funds to receive incoming calls or SMS, if the operator’s tariffs provide for payment for incoming calls while roaming or under specific conditions.
⚠️ Attention: Do not remove the old SIM card until the number change procedure is completely completed. It may be needed to obtain a control code or confirm your identity in controversial situations.
☑️ Ready to change number
Step-by-step guide for changing the number in the application
The process of changing the number is performed directly inside the messenger interface and takes only a few minutes. Open the app and go to the settings menu. Depending on the shell version Android and WhatsApp itself, the path may differ slightly, but the logic remains the same. Click on the three dots in the upper right corner of the screen and select Settings.
In the menu that opens, find the section Account. This is where all the parameters related to your profile, security and linked numbers are concentrated. Select option Change number. The system will immediately warn you that your account will be transferred to a new number, and the old one will be deleted from the service.
Two input fields will appear on the screen. In the first field, enter your current phone number that is currently associated with your account. In the second field, enter the new number you want to switch to. Pay attention to the country code: it must be selected correctly for the new number, otherwise the confirmation code will not be received. After filling out the fields, click the button Next.
You will be asked if you need to notify your contacts about the change in number. You can choose from three options: notify all contacts, notify only contacts you have active chats with, or not notify anyone. The choice depends on your privacy, but for ease of communication it is better to choose the second option.
If you change your number while roaming, make sure that the correct country code of the new operator is selected in the input field, otherwise the SMS with the code will not reach the device.
The process of verifying the new number
After pressing the confirmation button, the process will begin verification. An SMS message with a six-digit code will be sent to your new phone number. Enter this code into the appropriate field in the application. If the SMS doesn't arrive within a minute or two, don't panic: a countdown timer will allow you to request a resend or select the voice call option.
When you select voice call, an automated bot will call you and dictate a verification code. This method often works more reliably than SMS, especially in areas of unstable network coverage or when there are delays from the telecom operator. Enter the dictated numbers into the application to complete the login.
After successfully entering the code, WhatsApp will begin the data migration process. You will see a progress bar showing the status of your information being transferred to the new ID. At this moment, do not close the application or turn off the smartphone screen so as not to interrupt the synchronization process with the servers.
| Stage | User action | Expected result |
|---|---|---|
| 1 | Entering old and new numbers | System checks the number format |
| 2 | Selecting contact notifications | Setting the visibility of changes for friends |
| 3 | Entering a code from an SMS/call | Confirming ownership of a new SIM card |
| 4 | Automatic migration | Transferring chat and group history |
What happens to chat history and groups
One of the main fears of users is the loss of correspondence. When using the standard number change function, the entire chat history is saved. All personal dialogues, sent and received media files, as well as message statuses remain in place. You will continue to communicate with the same people, it’s just that your contact with them will be updated automatically (if you chose the notification option).
With group chats, the situation is as follows: you remain a member of all the groups you were in previously. Group admins are not needed to confirm your transfer. However, your number will change in the list of group members. If one of the group members has not saved your new number in the phone book, he may see you as an unknown user until the contacts are updated.
It is important to note that if you were an administrator of any group, these rights also remain with you. No additional actions need to be taken to transfer rights or confirm status. The system simply replaces the old number with a new one in its database, saving all links and identifiers.
⚠️ Attention: If you decide not to notify your contacts about the number change, chat participants who do not have your new number in their address book may not understand who is writing to them from an unknown address.
What will happen to status "Been online"?
Your activity status and privacy settings (who sees the photo, status, information about yourself) are also transferred to the new number without changes. You don't need to set up privacy again.
Two-factor authentication and security
If you had two-factor authentication (2FA) enabled using a PIN, this setting also carries over to the new number. This means that if you try to sign in from another device in the future, you will still need to enter the PIN you previously set. Remember it or keep it in a safe place, as it will be difficult to reset it without access to your email.
However, the email address associated with resetting two-factor authentication is worth checking. Go to the Account → Two-Step Verification section and make sure that the specified email is up to date and you have access to it. This is a critical security element that protects your account from being taken over by attackers, even if they get your SIM card.
After changing your number, old devices that were logged into WhatsApp using the previous number will be automatically logged out. This is a standard security measure: sessions are tied to a specific phone number. If you are using WhatsApp Web or the desktop version, you will need to rescan the QR code to authorize on your computer.
Two-factor authentication and all privacy settings are transferred automatically, but sessions on other devices (PCs, tablets) will need to be authorized again.
Possible problems and ways to solve them
Sometimes users are faced with a situation where the confirmation code does not arrive at the new number. First of all, check whether your smartphone is blocking messages from short codes. Try rebooting the device or moving the SIM card to a different slot. If the problem persists, contact your service provider to ensure that the SMS service is active.
Another common problem is data migration failure where the application freezes during the migration phase. This is usually due to an unstable Internet connection. Switch from mobile data to Wi-Fi or vice versa. Make sure that there is enough free space on the smartphone disk for temporary files of the update process.
In rare cases, after changing the number, the names of contacts in chats may disappear if they were not synchronized with the new phone book. To fix this, go to a new chat, click on the menu and select Update. This will force the application to re-read contacts from the phone's memory.
⚠️ Attention: Interfaces of mobile applications and operating algorithms of telecom operators may change. If standard methods do not help, check with the official WhatsApp help center or contact the support of your mobile operator.
Before changing the number, make sure that the new number is already saved under your name in the phone book of your smartphone. This will speed up the process of updating the display of contacts in chats after migration.
Frequently asked questions (FAQ)
Is it possible to change the number without losing the chat history?
Yes, when using the built-in "Change number" function in the account settings, all chat history, media files and group settings are saved and transferred to the new number automatically.
Will my contacts see that I have changed my number?
It depends on your choice during the change process. You can set the notification to apply to all contacts, only those you have chats with, or hide this change. If the notification is sent, a system message about the number change will appear in chats.
What should I do if I have lost access to the old SIM card?
To change the number within the application, access to the old SIM card is technically not required, you only need the number itself to be entered in the "Current number" field. However, if you have two-factor authentication enabled, you may need a code from an SMS to the old number if the system requests additional confirmation.
Do you need to delete your old account before creating a new one?
No, deleting your account is not necessary and even harmful. Using the number change function allows you to save all data. Deleting an account will lead to a complete loss of correspondence history and exit from all groups.
Will my status and profile photo be transferred?
Yes, your profile photo, information about yourself (text status) and visibility settings for this data are completely transferred to the new number without the need to re-download or configure.