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To unpin a conversation in your list of Snapchat chats, tap and hold the conversation and choose Chat Settings, then tap Unpin Conversation. If you're a Snapchat Plus subscriber, you can unpin your BFF by tapping and holding the person, then tapping Pinned as your #1 BFF. You can also unpin a BFF by choosing a different BFF.Snapchat lets you pin friends in the chat list, which makes it easy to find a conversation and pick up...