Backups are tied to your phone number. If you change numbers without using the "Change Number" feature first, you may lose access to your latest backup.
Backup files can be several gigabytes. Always use a stable Wi-Fi connection to avoid data charges and corruption. download latest whatsapp backup
Open WhatsApp > Settings > Chats > Chat Backup > Back Up . This ensures the "latest" version is in the cloud. Backups are tied to your phone number
For Android users, WhatsApp typically syncs with your Google Account. While you can't "download" a single file to read like a PDF, you can trigger a restore or use Google's export tools. download latest whatsapp backup
Use the Move to iOS app during the initial setup of your iPhone.