Thank you for your support of Xiaomi products. The Redmi Note 13 Pro+ 5G features IP68 waterproofing. However, if moisture or water enters the USB interface, it can disrupt normal charging. This is because the presence of liquid in the port can interfere with the charging process. To address this, ensure the USB interface is dry before attempting to charge the device. If you notice any liquid in the port, allow the phone to sit in a dry area for a while to ensure complete evaporation. If you are unable to clean the port yourself or if issues persist, please contact the local after-sales service center for professional inspection and cleaning. We appreciate your understanding and hope you continue to enjoy using Xiaomi products.