Last updated: May 18, 2026
Effective date: From the official release date
Developer name: ddHiFi
Company name: Guangzhou DD Electronics Technology Co., Ltd.
Contact email: support@ddhifi.com
This list explains the circumstances in which the ddHiFi Link Android App, ddHiFi unified account center (accounts.ddhifi.com), ddHiFi official website, after-sales service, product support portal, and ddHiFi-related business systems authorized to access the unified account center may provide information to third parties or connected systems, entrust third parties to process information, or involve information collected by third parties when providing functions such as registration and login, authorized access, product connection, PEQ configuration, firmware update, feedback, after-sales support, security verification, file upload, and system operation.
This list is prepared on a “verifiable and conservative disclosure” basis. If a third-party capability is used only when it is actually enabled by the account center, official website, after-sales system, or a specific page, this list describes it conditionally and does not mean that the ddHiFi Link Android App has directly integrated that third-party service at present.
1. Third-Party Service Sharing and Entrusted Processing List
| No. | Third Party or Recipient | Service Type | Use Scenario | Personal Information Involved | Processing Purpose | Processing Method |
|---|---|---|---|---|---|---|
| 1 | ddHiFi unified account center (accounts.ddhifi.com) | Unified login and account authorization | User uses unified account login, authorization, callback, or login ticket exchange in the ddHiFi Link Android App or other ddHiFi services | Account ID, nickname, avatar, email address, mobile phone number, region, SSO user identifier, authorization code, access token, login ticket, state parameter | Complete unified login, account identification, authorized access, prevent forged login requests | User actively jumps to the account center for login or authorization; ddHiFi completes the local login session according to the authorization result |
| 2 | Business systems authorized by ddHiFi to access the unified account center | Unified login and user identity recognition | User logs in to official website, after-sales service, product support, membership, or other ddHiFi business systems through a ddHiFi account | Account ID, nickname, avatar, mobile phone number, email address, region, account status, authorization scope, access token verification result | Provide login authentication, identity recognition, service activation, after-sales handling, membership benefit identification for connected systems | After user authorization or login, connected systems obtain identity information through the unified account process within the necessary scope |
| 3 | Tencent Cloud Object Storage COS | File storage and direct upload | Uploading or accessing PEQ files, product manuals, product images, OTA files, avatars, and backend configuration files | File name, file type, file group, object storage key, upload URL, public access URL; file content may contain information voluntarily submitted by users | Store and distribute business files, reduce transfer relay, support App downloads and backend management | ddHiFi generates a direct-upload policy, and the App or backend uploads directly to COS according to the policy; COS processes files and access requests as needed for object storage services |
| 4 | Cloud database or MySQL database service provider | Data storage | Saving account, product, OTA, PEQ, feedback, session, audit log, and backend management data | Account profile, contact details, session information, PEQ configurations, comments, feedback, IP address, User-Agent, creation/update time, etc. | Store business data, support service query, management, and audit | ddHiFi entrusts database service providers to process and store relevant data within the necessary scope |
| 5 | Redis or cache service provider | Cache and temporary status | SSO state, App login tickets, MFA login challenges, login failure counts, temporary locks, OTA cache, etc. | Temporary login status, client ID, login ticket, MFA challenge, login failure count, cache key | Support login processes, security verification, rate limiting and locking, improve service performance | ddHiFi entrusts cache services to process temporary data within the necessary scope and sets corresponding validity periods |
| 6 | Android system browser and system deep-link capabilities | System capability invocation | App opens account center, official website, product support pages, statement pages, or receives ddhifi-link://sso/callback deep-link callbacks |
Target URL, deep-link parameters, authorization callback parameters; browser may process cookies or access records according to its own rules | Complete web login, open external pages, return from browser to App | Jump and callback are completed by user device system capabilities; browser’s own data processing rules are the responsibility of the corresponding browser provider |
| 7 | App network communication components (Cronet, OkHttp) | Network request components | App calls ddHiFi service APIs, downloads product images, manuals, firmware, or PEQ files | Request URL, request headers, response data, connection status, error information; no additional personal profile is actively provided to the components | Implement App network requests and file downloads | Used as in-App network communication components; relevant data is sent to the ddHiFi service or file address accessed by the user |
| 8 | Server, cloud infrastructure, or operations service provider | Infrastructure, secure operation, and logging services | Website access, API calls, account service operation, system monitoring, troubleshooting, security protection | IP address, access logs, error logs, device and browser information, system operation logs | Ensure stable and secure operation of website, App backend, and account center; troubleshoot and protect security | ddHiFi entrusts infrastructure service providers to process or store relevant operation data within the necessary scope |
| 9 | SMS, email, and human verification service providers | Conditional notification and security verification | Used only when mobile phone verification, email verification, or human verification is actually enabled by the account center, official website, after-sales system, or specific page | Mobile phone number, email address, verification code, template information, sending status, verification parameters, IP address, verification result | Send verification codes or necessary service notifications, determine whether requests are initiated by real persons, prevent malicious registration, credential stuffing, brute force attacks, and API abuse | The corresponding service page invokes third-party capabilities within the necessary scope; the ddHiFi Link Android App is not therefore represented as directly integrated at present |
| 10 | Third-party account services such as WeChat, Google, and X (Twitter) | Conditional third-party account login and binding | Used only when the account center or specific page actually provides third-party login or binding and the user actively selects it | Third-party platform user unique identifier, nickname, avatar, email address, authorization information | Complete third-party identity verification, account creation or binding, prevent duplicate binding and account hijacking | User actively jumps to the third-party platform authorization page and authorizes; the third-party platform processes relevant information according to its own rules |
2. Third-Party Login and Account Center Information Interaction
The ddHiFi Link Android App currently completes account login through the ddHiFi unified account center. During login, the App opens the account center authorization page. After the account center completes verification, it returns the login result to the App according to the authorization process.
If the account center or a specific page provides third-party account login or binding such as WeChat, Google, or X (Twitter), the relevant third-party platform will display the authorization content to you according to its own pages and rules. After you complete authorization, the third-party platform will return the necessary authorization result to the account center or ddHiFi for login, registration, binding, or conflict verification.
ddHiFi will not obtain your third-party platform account password, and will not proactively publish content on your behalf or read information unrelated to ddHiFi login binding. The third-party platform is responsible for the information it independently collects and processes. Please read the service terms and privacy policy of the corresponding third-party platform before authorization.
3. Information Provided by the Unified Account Center to Connected Systems
When you log in to or authorize access to other ddHiFi business systems through the ddHiFi unified account center, the connected system may obtain the following information within the necessary scope:
| Information Type | Specific Fields | Purpose of Use |
|---|---|---|
| Basic identity information | Account ID, username, nickname, avatar | Identify user identity, display login status |
| Contact details | Mobile phone number, email address | After-sales contact, account verification, necessary service notifications |
| Region and account status | Region, language preference, account status | Distinguish service regions, determine whether the account can be used normally |
| Registration and authorization information | Registration time, authorization scope, access token verification result, SSO binding status | Activate services, record authorization status, protect API security |
Connected systems must not use your personal information beyond the authorization purpose or the scope necessary for the service. If you have questions about how a connected system uses information, you may contact us through ddHiFi’s official contact method.
4. Third-Party Services Not Currently Listed as Directly Integrated in the App
Based on the currently confirmable implementation of the ddHiFi Link Android App and related services, this list does not describe the following capabilities as directly integrated in the App:
- Advertising SDKs, cross-App tracking SDKs, or personalized advertising services;
- Third-party analytics SDKs, Firebase, Bugly, Sentry, or other crash or analytics SDKs;
- System capabilities such as location services, map services, camera, recording, contacts, and SMS content reading;
- Payment services, bank card processing, or real-name identity verification services.
If the above services are actually integrated in the future, we will update this list according to laws, regulations, and app store requirements, and notify you through page prompts, pop-ups, or other reasonable means where necessary.
5. User Choices and Management Methods
- You may choose whether to log in to a ddHiFi account. Some functions, such as cloud PEQ, feedback submission, device preference synchronization, or account profile management, may require login.
- You may choose whether to log in or bind an account through third-party login methods provided by the account center. If you do not wish to have authorization interaction with a third-party platform, you may use other login methods supported by the account center.
- You may manage account profile, binding relationships, and authorization status in the account center or relevant pages. If a direct entry is not yet available on the page, you may request processing through ddHiFi’s official contact method.
- You may clear local cache through App settings or clear App data through system settings. Clearing may affect local PEQ files, downloaded files, login status, and local preferences.
- You may apply to query, correct, delete, withdraw consent, or cancel your account according to the methods stated in the Privacy Policy.
6. Contact Information
If you have any questions, suggestions, or complaints about this list or third-party information sharing, or if you wish to exercise rights related to personal information, you may contact us by:
Official email: support@ddhifi.com
The above content is a translated version. In the event of any conflict with the Chinese description, the Chinese version shall prevail.
