To post a new thread, tap Forums: To get this view, then scroll down to the forum you need and tap: To reply to an existing thread, scroll down to this box: There, write your message and tap "Post Reply". If you want to answer a certain post, tap "Reply" in that post, at the bottom right of the post: This will automatically quote that post and lead you to the box, where you answer and tap "Post Reply". There's also the possibility to quote more than one post. In this case, tap +Quote in the posts you need: It will change to -Quote: Scroll down to post. Now select "Insert Quotes": You'll be able to control the posts you quote, if needed you can delete the one you don't want to quote, then tap "Quote these messages": The quotes will appear here: Now you're able to write your reply between them, and/or behind them: That done, select "Post Reply".