Send a message: Type and tap ➤
Schedule a message: Hold the send button
React to a message: Tap a message, pick an emoji
Set a reminder: Long-press a message → Set reminder
Search: Tap 🔍 in the header or More → Search
Star/Close a DM: Long-press the DM in the list (hold still for 350ms)
Notifications: Enable in More → your phone settings must also allow notifications
Add to Home Screen: In Safari, tap Share → Add to Home Screen for the best experience (badges, notifications, full screen)