Why does the car USB only charge but not recognize the phone?

1 Answers
VonAlina
07/30/25 3:09am
Car USB only charging but not recognizing the phone is caused by insufficient power between the car's USB port and the phone's interface. Below are the relevant details: USB car charger: Commonly referred to as a USB car charger. It leverages the universality of USB, which is widely used for various charging interfaces. When applied in cars, it converts the vehicle's 12V-DC and 24V-DC to the common DC-5V voltage for USB and other charging devices. Common specifications of USB car chargers: Output: 5V-DC-500mA; 5V-DC-700mA; 5V-DC-1000mA; 5V-DC-2000mA.
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