: Standard backup and restore within the same operating system (Android to Android or iPhone to iPhone) is always free. How to transfer your chat history | WhatsApp Help Center

: Use official methods like Google Drive (for Android) or iCloud (for iOS) to back up and restore your chats for free.

. It is required to activate the full version of the software, which enables features like transferring WhatsApp data between iOS and Android, backing up data, and restoring it to a new device. How to Obtain a Registration Code Official Purchase