Privacy Policy

The information we collect includes:

• Account information: Phone number, nickname, avatar, and other registration details
• Communication content: Messages, images, files, etc. that you send and receive through MChat
• Usage data: Feature usage frequency, login times, device information, etc.
• Device permissions: Camera, microphone, contacts, and other permissions you authorize
• Location information: If you choose to share your location, we will collect your location data

The information we collect is used for the following purposes:

• Providing, maintaining, and improving our services
• Verifying identity and ensuring account security
• Processing and forwarding your messages and calls
• Providing customer support and technical services
• Sending service-related notifications and updates
• Preventing and investigating policy violations
• Complying with legal and regulatory requirements

We do not sell your personal information.

Your information may be shared in the following circumstances:

• Message recipients: Individuals you choose to send messages, make calls, or share content with
• Service providers: Third-party vendors who help us provide services, but they must comply with confidentiality obligations
• Legal requirements: When we have reason to believe that compliance with legal procedures or protection of our rights is necessary
• User consent: Other circumstances with your explicit consent

MChat employs industry-leading security measures to protect your data:

• End-to-end encryption: All messages and calls use end-to-end encryption, only the communicating parties can decrypt them
• Data encryption: Data stored on servers uses Advanced Encryption Standard (AES) encryption
• Security audits: Regular security reviews and vulnerability testing
• Access control: Strict limitations on employee access to user data, following the principle of least privilege

You have the following rights regarding your personal information:

• Right to access: View the personal information we hold about you
• Right to rectification: Request correction of inaccurate or incomplete information
• Right to deletion: Request deletion of your personal information and account
• Right to restriction: Request restriction of our processing of your information
• Right to portability: Obtain a copy of your data
• Right to object: Object to our processing of your information

To exercise the above rights, please contact our customer service team.

Message retention: End-to-end encrypted messages are not permanently stored on our servers after delivery.

Account data: Your account information will be retained for a period after you delete your account to meet legal compliance requirements.

Log data: Technical logs are typically retained for no more than 90 days.

Disappearing messages: Messages with this feature enabled will automatically disappear after the recipient views them according to the set time.

We use cookies and similar technologies to improve user experience:

• Essential cookies: Technical cookies necessary to ensure proper functioning of services
• Functional cookies: Remember your preference settings
• Analytics cookies: Understand how users use our services for continuous improvement

You can choose to reject cookies in your browser settings, but this may affect some functionality.

MChat is not designed for children under 13, and we do not intentionally collect personal information from children.

If you discover that we have inadvertently collected information from a child, please contact us immediately, and we will promptly delete the relevant data.

We may update this Privacy Policy from time to time. For significant changes, we will:

• Post update notices within the app or on our website
• Send change notifications via email
• Provide a reasonable notice period before changes take effect

Continuing to use the service constitutes acceptance of the updated policy.

If you have any questions or concerns about this Privacy Policy, please contact us through the following methods:

• Email: [email protected]
• Customer Service Hotline: 400-123-4567
• Business Hours: Monday to Friday, 9:00 AM - 6:00 PM
• Mailing Address: MChat Technology Co., Ltd., Chaoyang District, Beijing

We commit to responding to your privacy-related inquiries within 30 days.