ECall iOS - Documentation¶

This repository contains all documentation for the ECall iOS application, separated by audience.

📚 Document Structure¶

1. Business Documentation (/business)¶

High-level documentation for non-technical stakeholders, focusing on features, requirements, and user flows.

• Product Requirements - Core feature specs and acceptance criteria
• Competitive Advantage - Market positioning and differentiators
• User Guide - End-user guide covering all app features (PDF source)

2. Developer Documentation (/dev)¶

Canonical technical documentation for developers. Single source of truth for all implementation details.

Authentication¶

• Overview - Auth flow, OTP verification, device registration
• Auth Flow Diagram
• Device Registration Diagram

Calls¶

• Overview - Call system architecture
• One-to-One Calls
• Group Calls
• Join/Rejoin
• E2EE - End-to-end encryption

Contacts¶

• Overview - Friend requests, QR scan add contact, token encryption

Networking¶

• API Client - Request signing, retry logic
• Configuration - Environment setup
• Token Refresh - Proactive refresh, thread-safe queue

Security¶

• SSL Pinning - Public key pinning strategy
• API Request Signing - HMAC-SHA256 signatures

3. Partner Documentation (/partner)¶

Guides for partners and resellers on building and configuring their custom applications.

• Partner Onboarding Guide - Step-by-step setup
• Partner Technical Reference - Xcode, troubleshooting, compliance
• Partner Build Checklist - SSL pinning, versioning, git commit hash
• Security Policy - Outsource security guidelines