The dr300 is fully equipped with a mobile phone stand that can accommodate most smartphones, including common brands such as iPhone, Samsung and Huawei. Its mobile phone holder is made of high-quality materials, stable structure, can easily fix the mobile phone, avoid shaking and shaking, and ensure safe driving. In addition, the Angle of the bracket can be adjusted, and the Angle of the mobile phone can be adjusted according to the needs of the driver, which is convenient for watching navigation and answering the phone. Therefore, the mobile phone holder of the Haojue dr300 is very practical and can well meet the needs of the driver.