If I change my number in WhatsApp, will messages and groups be saved - briefly?
When you change your phone number on WhatsApp, your message history, media, and contacts are not transferred to the new number. However, you can export your chat history as a backup before switching numbers.
If I change my number in WhatsApp, will messages and groups be saved - in detail?
Changing your phone number in WhatsApp is a straightforward process that ensures your chat history and group memberships are preserved. When you initiate the number change process within the app, WhatsApp automatically backs up your messages, photos, videos, and other data to either Google Drive (for Android users) or iCloud (for iPhone users). This backup includes all your chats, both individual and group conversations.
During the transition, you will be prompted to verify your new phone number through an SMS code or a call. Once verified, WhatsApp seamlessly transfers your chat history from the old number to the new one. It's important to note that while this process is designed to retain all your data, it's always a good practice to manually back up your chats before making any changes. This can be done by going to Settings > Chats > Chat Backup and following the prompts.
Group memberships are also preserved during this process. Your contacts within groups will still see you as part of those groups, and you won't lose any group-related information or media. However, if your old number is still active and used by someone else, they might receive messages intended for you until the group administrator manually removes the old number from the group.
In summary, changing your phone number in WhatsApp does save your messages and groups. The app's built-in backup system ensures a smooth transition, maintaining your chat history and group memberships without data loss.