Thanks for your support of Xiaomi products. The REDMI 15C 5G in a high-temperature environment will limit the overall performance of the phone, resulting in slow application startup.
If your REDMI 15C 5G experiences slow app launches in high temperatures, please refer to the following details:
The REDMI 15C 5G will actively limit overall performance to protect the battery when the ambient temperature is too high.
It is recommended to wait for the phone to cool to room temperature before use.
This is normal and not a product defect. Please feel free to use it.