Privacy Policy

1. Introduction

Welcome to Dou Line! The Dou Line mobile application (the software, the app) is owned and operated by Yilian Internet Technology Co., Ltd. ("Yilian", "we", "us", "our" or other similar pronouns). We dedicated to safeguarding your privacy. This Privacy Policy outlines how we collect, use, disclose, and protect your personal information when you use our services ("Dou Line", "Services", or "services"). By using our services, you agree to the practices described in this policy.

2. Information We Collect

2.1 Personal Information

When you use Dou Line, we may collect personal information that you voluntarily provide to us, including:

Name: Used for account identification and personalization.

Email Address: Used for account creation, communication, and password recovery.

Phone Number: Used for providing our calling and messaging services.

Contact List: Accessed with your permission to enable communication features within the app, such as the direct phone calls, sending text and querying rates of the phone number. A simplified copy of the address book with information such as the name, phone number, and ringtone of each contact will be stored, and used to display the identity of the call. All the contact list information will be removed permanently once the user uninstalled the app. In the call/text or query function cases, the phone number will be sent to our server to complete the core function, but will not stored in our server. In all other cases, all your contact list info will not be uploaded to our server, or any third party server. All your contact list info is only stored in your local device, within the App.

Demographic Information: like age, gender or preferences may also be collected by us. And we might ask you to make a publicly-visible profile which may contain your name and photo. Such information may be used to provide personalized content and information for you and others, including online ads or other forms of marketing. When you register with a third-party account, we may obtain information such as age, gender, address or portrait from your third-party account and use it to complete your profile. All this information is optional and depends on the design of the function.

2.2 Device Information

We collect information about the device you use to access our app, which helps us optimize our services and improve user experience. This includes:

Device Model: To ensure compatibility and performance.

Operating System Version: To provide relevant updates and support.

Unique Device Identifiers: For tracking usage patterns and preferences.

IP Address and Mac Address: For security and fraud prevention.

Location Information: Needed for certain features. Some functions, like "Find Nearby Friends", also keep your location information on our servers and share it with other users. In case you have concerns regarding the privacy of your location information, we suggest that you refrain from using those features.

Other Device-related Information: The type and version of the mobile web browser, location details, MCC (Mobile Country Code) information, the name of the mobile application, and other technical data about your device will be acquired and utilized as identification information for detecting, investigating, preventing, or addressing technical issues or illegal activities. Moreover, a list of specific mobile applications installed on your device will also be collected in order to provide certain functionalities, such as signing in through a third-party service or sharing messages on other third-party apps and services.

2.3 Usage Data

We gather information about how you interact with our app to understand usage trends and improve functionality. This includes:

Features Accessed: To analyze which parts of the app are most popular.

Time Spent on the App: To gauge user engagement and improve features.

Interaction Logs: To troubleshoot issues and enhance user experience.

2.4 Cookies and Similar Technologies

We use cookies, beacons, and similar technologies to collect data on your usage patterns, which helps us tailor our services to your preferences. This includes:

Session Cookies: For maintaining your login session.

Persistent Cookies: For remembering your preferences.

Analytics Cookies: For tracking and analyzing app usage.

3. How We Collect Information

Direct User Input: Information you provide when creating an account, updating your profile, or contacting support.

Automated Technologies: Information collected through cookies, log files, and similar methods for analytics and service improvement.

Third-Party Integrations: Information from third-party services like social media logins, if applicable.

4. Use of Your Information

We use the information we collect to:

Provide and Maintain Services: Ensure our app functions correctly and deliver the services you expect.

Personalize User Experience: Customize features and content to suit your preferences.

Improve App Performance: Analyze usage data to identify areas for enhancement and optimization.

Communicate with You: Send updates, promotional materials, and other relevant information.

Ensure Security: Monitor and prevent fraudulent activities and unauthorized access.

5. Sharing of Your Information

We do not sell your personal information. We may share data with:

Service Providers: Third-party vendors that help us operate our app, perform analytics, and provide customer support.

Analytics Partners: Companies that analyze user behavior to help us improve our app’s performance.

Legal Obligations: Authorities when required by law to comply with legal processes.

6. Security of Your Information

We implement industry-standard security measures to protect your data, including:

Encryption: Secure data transmission and storage using advanced encryption methods.

Access Controls: Restrict access to personal information to authorized personnel only.

Security Audits: Regularly review and update security practices to prevent breaches.

7. User Rights and Controls

You have the following rights regarding your personal data:

Access: Request a copy of the personal information we hold about you.

Correction: Update or correct any inaccuracies in your data.

Deletion: Request the deletion of your personal data.

Consent Revocation: Withdraw your consent for data processing at any time.

You can exercise these rights by contacting us at douline@idous.app or managing your privacy settings within the app.

8. Data Retention

We retain your personal information only as long as necessary to provide our services and fulfill our legal obligations. When data is no longer required, we will delete it in a secure manner.

9. Changes to This Privacy Policy

We may update this Privacy Policy periodically to reflect changes in our practices or legal requirements. We will notify you of significant changes by posting the updated policy on our app and website, and, where appropriate, through email or app notifications. Your continued use of the app after such changes constitutes your acceptance of the revised policy.

10. Contact Us

If you have any questions or concerns about this Privacy Policy, please contact us at douline@idous.app.