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How to retain old WhatsApp chat in new mobile number?:Lose access to old chats if you don’t follow these 5 steps
New Delhi7 hours ago
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If you are getting a new SIM card or planning to change your phone number, WhatsApp’s Change Number feature can make things easier. However, before starting the number-change process, it is essential to understand some important technical details and backup rules
If you do not follow the correct procedure, you could lose access to your old chat backups and data. In this report, we explain WhatsApp’s rules for changing your number and the correct process to follow:
Things to keep in mind before changing your number
<img src="https://justfineinfotech.com/wp-content/uploads/2026/09/whatsappnew_1789885468.png” alt=””>
Before starting the number-change process, check whether calling or SMS services have been activated on your new number. Also check whether your old number is still registered on WhatsApp
To check your old number, go to WhatsApp’s three-dot menu > Settings > Profile picture. Keep in mind that this change cannot be made through WhatsApp Web or the desktop app; you must use your primary phone
List of supported and unsupported numbers
WhatsApp does not support all types of numbers for registration
- Do not use these numbers: VoIP, toll-free, premium-rate, Universal Access Numbers (UANs), personal numbers and landlines.
- Landline rule: Landline numbers are supported only on the WhatsApp Business app.
How will this affect blocked contacts and groups?
If you change your number while using the same WhatsApp account, your blocked contacts will remain blocked and will not receive any information or notification about your new number
However, your group chats will automatically receive a notification that you have changed your number, whether or not you have selected the ‘Notify Contacts’ option
Moving to a new phone? Here’s how to back up your chats
If you are changing your number and moving to a new phone, do not make the mistake of restoring the backup directly on the new phone
According to WhatsApp, a cloud backup is linked to the phone number with which it was created. Therefore, a backup taken with the old number cannot be restored using the new number
The correct method: First, change your number on your old phone using the steps given above. After this, use your new number to create a new chat backup on your Google Account
Now install WhatsApp on the new phone, register your new number and restore the new backup
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