SooTalk: Private Messenger App

1. Core Features
SooTalk redefines social messaging with intuitive features:
Instant Communication: Support 1-on-1 private chats and 10000-member group chats, Support audio and video chatting. Read receipts and 7-day cloud backup .
Multimedia Sharing: Send HD pics , videos, voice messages,and live location (friend-only).
Video Conference: Multiple people can have audio and video conversations, such as business meetings, webinars, and online education.

2. Security & Privacy
Encryption: End-to-end AES-256 for messages (serverless decryption key).
User Control: Delete sent messages at any time and can be deleted from the recipient, block/report users, delete chat history, and permanent data wipe on account deletion.

3. Cross-Device Experience
Sync messages across mobile & PC. PC client minimizes to taskbar for uninterrupted use.
Customization: Multiple themes (including dark mode), chat backgrounds, notification sounds, and "Do Not Disturb" (friends only).

4. Compliance & Support
GDPR/CCPA compliant. Privacy policy accessible on login.
24/7 customer support (response ≤15min), version update notifications 7 days in advance with rollback options.