Popular chat apps like Facebook Messenger and (these days, sadly) WhatsApp might not cut it when it comes to privacy and security, but they sure do offer some fun ways to customize your chats. If you're worried that moving to Signal Private Messenger means you lose these features, don't — the privacy-focused app also lets you choose custom chat wallpapers for all your threads. Signal introduced custom chat wallpapers in version 5.3.1 for iOS and 5.3.7 for Android that also included other features like a status update-like "About" section in your profile and animated stickers. These are... more