1. Define the Core Features and Project Scope
Before development begins, teams identify the essential features required for the first version of the messaging application. Clear planning helps reduce development complexity and ensures that the product focuses on real user needs.
Common features include:
- User registration and authentication
- Contact synchronization
- Real-time text messaging
- Voice and video calls
- Multimedia sharing (images, videos, documents)
- Message status indicators (sent, delivered, read)
- Push notifications
- End-to-end encryption
Creating a Minimum Viable Product (MVP) allows developers to launch the app faster and gather valuable feedback from early users. 
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