The thermal conductivity of the metal frame is relatively high, and the heat sensation is more obvious than that of the plastic frame when touching. When the internal components of the Xiaomi MIX Flip, such as the CPU, GPU, and battery, generate heat, the metal frame conducts this heat away from the internal components to prevent overheating, making the frame itself warm or hot to the touch. The Xiaomi MIX Flip uses a metal frame, giving you a more refined appearance and a better sense of holding. In some high-load scenes (such as playing games, charging, etc.), it is normal to feel hotter when touching the metal frame. The temperature of the phone frame is strictly invested before leaving the factory to ensure that it is absolutely safe when you use it. Please feel free to use it.