iPhone temperature can be checked by going to the Settings app and selecting the General tab. There, you will find a section called Temperature. There, you will find a list of all the devices that are connected to your iPhone. The list will include your iPhone, as well as any other devices that are connected to your Wi-Fi network. The next step is to select the device that you want to check temperature on. This can be done by selecting the name of the device from the list or by clicking on its icon. Once selected, you will need to enter its temperature in degrees Celsius or Fahrenheit. Once entered, you will need to press OK to continue. If everything goes according to plan, your iPhone should now be reporting its temperature in Celsius or Fahrenheit.