With this method, you can send WhatsApp messages to your iPhone and view them on iPhone in the form of email, but you can't open it on WhatsApp.
Here is how:
Step 1. Directly find and open WhatsApp on Android, then go to "Setting > Chats Setting > Chat History > Email Chat".
Step 2. Select the conversation you wish to send to your iPhone, then a pop-up window will appear and ask you whether to transfer WhatsApp messages with media files or not. Choose one of the option and then go to the next step.
Step 3. Now, you'll be taken to a new page, here you need to type your email account and click the "Send" button.
Step 4. Login to your email account on iPhone, then you can see the WhatsApp messages in email directly.
More Detail:whatsapp backup android->ios->android
— modified on Jul 2, 2018, 11:42:44 AM