In the Moments screen, you can like or comment on other user's posts.
To like a post
Tap the "Like" button and select your expression about the post.
To comment on a post
1. Tap the comment button within the post which you want to comment on.
2. Type in your text message in the text box. You can also add an audio message or emoticons to your comment.
a) To add an emoticon to your comment, simply tap the "Smiley" button, then tap the emoticon you want to add to your post.
b) To add an audio message to your comment, tap the "Record" button, then press and hold on the button to start recording.
When you’re satisfied with your recording, tap the "Thumbs Up" button to add it to your post. If you want to record again, tap the "Thumbs Down" button and repeat the process.
3. After you are done, tap the "Send" button to post your comment.