I’ve always found that using WhatsApp’s built-in backup and restore feature works best for transferring chats, especially from one device to another. For cross-platform solutions (like Android to iPhone), apps like “MobileTrans” or “Dr.Fone - WhatsApp Transfer” can handle the process pretty smoothly. You connect both devices to your PC and follow the steps in the app. Just make sure both devices are recognized. What worked for me was carefully following the on-screen steps—don’t disconnect until it’s finished.