full screen effects to Messages app in iOS 11 beta.
Earlier in iOS 10, Apple has Screen Effects and Bubble Effects in the Message
app. Likewise, the two new effects ‘Echo’ and ‘Spotlight’ are added in the section
where Balloons, Celebration, Confetti, Love, Lasers, Fireworks and Shooting
press the Send button in Messages with 3D Touch, and then tap the Screen tab
at the top. You can swipe through real-time effect for more effects.