- In what way are Message Extensions similar to apps?
a) They can exist independently and support In-App Purchases.
- What do you need to create a Sticker Pack?
a) You need images that can be added to the Sticker Pack template.
- How can you test your Message extensions?
b) You must use the predefined conversations in the simulator.
- What object is used to configure a complex message that can be sent through your extension?
c) The MSMessage object.
- How can you identify the users that participate in a conversation?
a) By reading their unique, random identifiers.
- How do you know whether a message was delivered to the recipients?
c) There is no way to be sure due to privacy concerns.