Comment threads help you keep track of conversations and make it easy to respond to a specific thread. This update will make your feed an even better place to share interests, get inspired and connect with others. Now, when you hit reply underneath any comment, your response will automatically be grouped right underneath it in a thread.
Comment Threads are available in version 24 and above for iOS and Android. It will be available globally in the coming weeks.
You can download Instagram from the App Store for free.