The Xiaomi 15 Ultra is equipped with advanced camera features and has undergone extensive optimizations and adjustments to enhance the portrait photography experience. These improvements include adjustments to tone, skin color, background blur, and beauty effects, all of which work together to provide stunning portrait shots. To achieve these effects, the phone uses sophisticated new algorithms that require processing power.
As a result, during the operation of these algorithms (especially in portrait mode) you will notice the phone heating up slightly. This heating is a normal occurrence and is a byproduct of the phone's powerful processing capabilities working to deliver high-quality images. It is not a malfunction or indication of a problem with the device.
However, it’s worth noting that if the ambient temperature is particularly high, the phone can heat up more quickly. In such conditions, it is recommended to reduce the use of high-load functions to maintain optimal performance and comfort during extended use.