Skip to Contents

How-to & Tips

Find help information for your LG product

Learn about product installation, maintenance, and troubleshooting using our search options.

Why is my smart phone hot and how can I minimise it?

  • Power
  • Overheating
  • Troubleshooting
  • LG Mobile Phones, Mobile Phone Accessories, Smart Watches, Tablets
  • Last Updated 05/05/2015

Why is my smart phone hot and how can I minimise it?



cause Cause

                 ■ Heat from smart phones usually generates from CPU in the main board and chip of the phone.

                    This tends to occur more frequently for high-performance dual core or quad-core phones, that use a 4G network.  


                  ■ The location of the PCB (Printed Circuit Board) within the phone can vary by product design, as such, so does the heat experienced.   


                   Structure of various phones


                     1) PCB is exposed to hands, so heat is easily detected 
                     2) PCB is
underneath the battery, so heat cannot be easily detected 

              ■ Further to this, when products with HD LCD are used for a long time, they
can get slightly hot. 

              ■ LTE (Long Term Evolution) products
are equipped with 1.5GHz dual-core processor and LTE modem that helps faster data processing.
                   As hardware performance is improved, heat can be generated due to CPU processing. 

If products are used when connected to a charger, charging circuit can give up heat.



how to fix How to fix   

             When the smart phone gets extremely hot, stop use and leave to cool down.

               (Close all running programs such as games and apps)

             ■ Have brightness
less than 40% for indoors or engage illumination sensor to reduce heat from LCD. 

Do not directly connect the charger to the phone and remove battery for charging.


             ■ Use a certified charger.





Article Feedback

1. Overall, how satisfied were you with the usefulness of this article?
1.1 Why did the article not resolve your issue?

Characters left : 500 / 500