It is often difficult to access the test results of some well-known brands before the release of their products, as this information is often considered commercial confidential or undisclosed information. Generally speaking, the following methods may help to obtain relevant information: 1. **Official channels**: Pay attention to the brand's official website or social media. Many companies will release product test results or evaluation information in advance. 2. **Industry evaluation agencies**: Some third-party agencies will evaluate upcoming products. You can look for reports from these agencies. 3. **Technology news websites**: Some technology news websites and blogs will obtain internal information before the product is released to make predictions or reviews. 4. **Online forums and communities**: In some specialized forums and communities, users may share their testing experiences or insider information. 5. **Register as a tester**: Some brands will release testing plans. You can apply to become a product tester to obtain first-hand testing experience and results. Please note that accessing undisclosed test results may involve legal and ethical issues. Be sure to follow relevant regulations.