You can delete WhatsApp chat history from your phone. Whether you are using an android or iPhone or any other devices WhatApp gives you capability to delete your all chats whenever you want. Follow these simple steps to delete WhatsApp chat history from your phone.
Step 1: Open WhatsApp on your Phone.
Step 2: Go to WhatsApp setting section.
Step 3: Once you open Setting you will see below screen on your Phone. Click on Chat option from the list.
Step 4: Click on Chat History. See below screen for reference .
Step 5: Now you will see Clear All Chats. Click on this option and will you see below screen.
Step 6: If you want to Delete Media related to Chat and Delete Starred messages as well than click on both the option else leave them un-selected.
Step 7: Click on CLEAR MESSAGES. Now all you chat history is cleared from your Phone.