At the 2021 MWCS (Mobile World Congress Shanghai 2021), a BYD Han sedan equipped with Huawei's HiCar App was showcased as one of fruits from the cooperation between the telecommunications giant Huawei and the automaker BYD. 

BYD announced in last December its DiLink intelligent connected system would be available to the HiCar App, Huawei’s self-developed smartphone-to-vehicle mobile phone interconnection solution. Like its rivals like Android Auto and Apple CarPlay, it transfers a smartphone-controlled interface to the car's infotainment system. Data received via the smartphone can be shown on the car screen and played through the car-mounted loudspeakers.

BYD said the introduction of the HiCar App would enable a deeper connection between users of smartphone cars and BYD’s vehicles.

Currently, the operating system of Huawei HiCar is Harmony OS 1.0. According to Huawei’s staff, the HiCar is developed based on Linux open source software. After updating to Harmony OS 2.0 in the future, it will feature more powerful functions and deliver better experience.

In the Huawei HiCar app store, there have been nearly 30 apps, most of which are dedicated to video entertainment. You can also download the apps that support HiCar mapping system, covering multiple categories like maps, music, audiobooks and news. The HiCar is also applicable to a few music Apps such as Kugou and Migu.

Aside from BYD, Huawei has to-day formed partnerships with many Chinese local automakers like Great Wall Motor, Geely and Changan Automobile, as well as the self-owned brands of BAIC Group, SAIC Motor and GAC Group.