Mobile Heating

Mobile Heating
Mobile Heating

Almost all of the handsets especially smartphones heat up when they are used for a longer time. Some smartphones may heat up much more than the others, there are many reasons that might lead to the heat buildup. From Oneplus 2 to Sony Xperia Z5, the users complained about heating and some heating in the devices. To a fact that devices build before 2014 were not having complaints of Heating. Heating to some extent is tolerable but to an alarming rate the heating becomes intolerable. Nowadays, it is fairly common to find users complaining of phones running "hot/warm" especially when using outdoors. Heating up and device getting bursted is not uncommon now, as we see several related things happening around. But let’s dig in to check what causes this. 
Lithium batteries have what we call it as “thermal runaway”. It is a situation where an already heating up battery makes it worse by generating more heat. How much ever the companies try to make a device compact, maintaining all the safety for the battery,and still the heat escapes. 
Mobile heating and battery heating are two different things, Battery heating is the heat inside the battery whereas the mobile heating is the sum of all the heat produced in a phone including the heat of processor, heat of the battery etc. 

What is Heating? How my Mobile gets heated up?

  • When a demanding game or usually called a heavy game is running on a phone, the processors (both the general processor and the graphics processor) have to work harder. Since the processors are basically transistors, the power drawn (basically current) to compute faster leads to a rise in temperature
  • The phone uses more power while running games, browsing heavy websites and recording videos.Since the demand increases the current supplied by the battery increases and this leads to heating of the back region of the phone (Generally Localized in the Region of the SoC)
  • The battery and accompanying charging circuitry also heat up when the phone is connected to a charger because 2A of current is flowing from the power socket into the battery. All phones heat up when they are connected to a charger, It is normal. This is noticed in almost all the phones.
  • The higher resolution and higher quality displays consume more power. This is especially seen when you are using the phone under sun or outdoors under hot temperature.
  • The ambient temperature is high, because to compensate for the extra light the phone bumps up the brightness. This makes the screen consume even more power. Obviously the Result would be an increased heat.
  • Most of the time, smartphones get heated during using it while charging as it becomes an Exchange medium where the Power is getting supplied and also getting lost during the same time.
  • Surrounding Temperatures-temperatures around 35° to 38° are common in several places, while the battery life is getting hit anyways, you can call it normal if the phone is operating at around 38-40° in such conditions.
  • Hardware defect: This is a rare manufacturing problem, which might always give untimely heating problems, and you might notice that even from the day you started using the smartphone.
When Do I say that My Mobile is getting Over-Heated?

The criteria for overheating as said by most of the Manufacturers is mostly above 50°C and below that range is Normal Or until there is a Feel of hotness in your hands.

Where Can I check the Temperature of My phone?

To check Battery temperature dial *#*#4636#*#* and to check CPU Temperature, Download this app.


The latest flagships like Lumia 950XL, One plus 2,Galaxy  S7 have offered a new system of cooling like the Liquid cooling system, Thermal gel etc.

Effects of heating:




  • Immediate effect to battery life cycle of a smartphone
  • May result in battery burst
  • The performance of phone goes down as the phone heats up resulting reduced performance.

Solutions for heating



  • Disable unwanted Functions like GPS(If you don''t Use)
  • Disable the processes (Apps) running at same time.
  • Replace the battery if old and Not genuine.
  • Allow phone to cool down after long duration of Graphics intensive Gaming sessions.
  • Don’t Use the Smartphone when Charging.
  • [App] No-frills CPU Control : Underclock your Processor Click Here

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