Open your phone’s built-in battery or device care settings
Check the battery temperature if your phone shows it
Use a hardware info app from the app store
Search for “battery temperature” or “device temperature” in the app
Use a temperature monitoring app designed for your phone model
Check the phone’s status in the manufacturer’s support app if available
Feel the back of the phone carefully to judge if it is unusually hot
Use an infrared thermometer for an external reading
Stop using the phone if it becomes too hot
Let the phone cool down before checking again