How to protect electronics from the heat? See tips and answers.

High temperatures affect more than just our skin: smartphones, laptops, and tablets also need special care during the summer days. showmetech gathered some tips from How to protect electronics from heat. and avoid extra expenses. Check it out now!

Questions and answers about electronics in the heat.

Should heat be a purchasing criterion in Brazil?

The shortest answer to that question is relatively obvious: yesIn the face of climate change and rising average temperatures In Brazil, it makes sense to consider heat as a purchasing criterion. Investing in electronics manufactured with materials (such as less durable plastics) that do not degrade easily at high temperatures And those that feature internal cooling solutions, such as efficient fans or vapor chambers, help maintain performance and prevent damage to the processor and other components.

Models with few air vents or built with materials that retain more heat than they dissipate may suffer, over time, from the thermal buildup generated by the processors themselves, compromising the operation and lifespan of the device.

Can heat really burn out an electronic device?

Yes, heat can damage electronics. Prolonged exposure to high temperatures accelerates the wear and tear of internal components, such as processors, memory chips, and batteries, which have well-defined thermal limits. When these limits are exceeded, protection systems may reduce performance or shut down the device, but they cannot always prevent permanent damage.

In very hot environments, the difficulty in dissipating the heat generated by the device's operation exacerbates the problem, potentially causing frequent freezes, accelerated battery degradation, and even component burnout over time, especially in common situations such as use in direct sunlight, inadequate ventilation, or charging with the device already heated.

Why do cell phones and laptops become slower on very hot days?

Cell phones and laptops slow down on very hot days as part of a protection mechanism against overheating, known as thermal throttlingTo prevent damage to internal components, manufacturers program devices to automatically reduce performance when the temperature exceeds levels considered safe. This temporary limitation reduces heat generation and helps preserve the device's functionality.

On days with high temperatures, it is recommended to use electronics in well-ventilated or air-conditioned areas, away from direct sunlight, which helps maintain high performance and prevent premature wear of components.

Is it dangerous to charge your cell phone when it's already hot?

It is potentially dangerous to charge your cell phone when it is already hot. During charging, it is normal for the smartphone to heat up, as it is receiving electrical power via cable or inductive charging. If the device is already at a high temperature, whether due to intense use or exposure to heat, it is best to wait for the internal temperature to decrease before plugging it in. This will reduce the risk of accelerated wear and tear on the battery and other components.

In newer models, the system itself may prevent charging from starting when it detects temperatures above the recommended level, as a protective measure. Even so, the safest practice remains waiting for the device to return to normal temperature before recharging.

Do phone cases, covers, and screen protectors help or hinder in the heat?

Phone cases, covers, and screen protectors tend to... hinder heat dissipationEspecially on warmer days, accessories that completely enclose the device act as a thermal barrier, hindering the escape of heat generated by internal components and increasing the smartphone's temperature during use.

Simple plastic cases, including those that come in the box with some cell phones, can worsen the problem, especially during charging. In situations of intense heat, the recommendation is to temporarily remove the case to facilitate heat dissipation, taking basic care to avoid drops and impacts.

To what extent does heat reduce battery life?

Heat reduces battery life in a way that... significant and progressiveLithium-ion batteries, used in cell phones, laptops, and other electronics, are especially sensitive to high temperatures. Frequent exposure to heat accelerates internal chemical reactions, leading to loss of capacity, reduced battery life, and premature aging, even when the device shows no apparent faults.

In practice, temperatures above 30°C to 35°C These factors are already starting to negatively impact battery health, especially when combined with heavy use or during charging. In very hot environments, the battery can lose months—or even years—of its lifespan over time.

Does using a laptop on your lap, sofa, or bed worsen overheating?

Yes, using your laptop on your lap, on the sofa, or in bed worsens overheating. Most models have air vents on the bottom, which can be easily blocked by soft surfaces, preventing the dissipation of heat generated by the fans and raising the internal temperature of the device.

Using them on hard surfaces, such as tables, is best, as it allows for adequate air circulation. Some newer notebooks adopt design solutions that slightly raise the base when the lid is opened, creating extra space for ventilation. Even so, in models that don't have this feature, using stands—preferably with additional fans—helps reduce overheating and preserve performance.

Does air conditioning really protect electronics?

Air conditioning can indeed help protect electronics by maintaining an ambient temperature more suitable for device operation, reducing the risk of overheating, performance loss, and premature wear of components, especially batteries. On very hot days, air conditioning promotes heat dissipation and prevents devices from activating protection mechanisms, such as automatic performance reduction or shutdowns.

However, the use of air conditioning does not eliminate other risk factors, such as inadequate ventilation, heavy use, prolonged charging, or direct exposure to sunlight, in addition to the necessary care regarding sudden temperature changes that can cause condensation.

Do household appliances consume more energy and break down more often in extreme heat?

During periods of extreme heat, household appliances tend to consume more energy and suffer greater wear and tear. Equipment such as refrigerators, freezers, and air conditioners need to operate for longer periods and with greater effort to maintain a stable internal temperature, which increases electricity consumption and accelerates the wear and tear of components such as motors, compressors, and electronic boards.

Excessive heat can also compromise ventilation efficiency and increase the risk of failures over time, especially in scenarios of heavy use, inadequate maintenance, or overloaded power grid.

Is there a "safe" temperature for using electronics on a daily basis?

Most cell phones, laptops, tablets, and other consumer devices are designed to operate, in general, between 0°C and 35°C, the interval during which the performance and integrity of the components are preserved.

Tips for keeping your electronics safe in the heat.

Turn off your smartphone.

A good practice to prevent your device from overheating is simply to turn it off and go enjoy the hot day somewhere cool. Therefore, if you are already in a high-temperature environment, such as a beach or a water park, turn off your phone and take the opportunity to cool off. Even if you turn the device on to take pictures, turn it off immediately afterward.

Another good tip is, even if you turn off your smartphone, remember to place it in a shaded area, perhaps inside a bag or compartment. And never, under any circumstances, leave your cell phone in the car, as the internal temperature of the vehicle can cause overheating.

Go to a shady place.

The tip seems simple, but if you need to use your cell phone to order an Uber ride or even take photos, choose shady areas to escape the high temperatures for a moment. Imagine that, on hot days, your smartphone will already be warm precisely because of the weather, so any activity will only be a "lighter" that will make it even hotter.

After doing what's necessary, it's worth turning off the device until you get home or reach an air-conditioned environment to avoid damaging the battery. On its official website, the Apple It is recommended that iPhones and iPads be used in ambient temperatures between 0° and 35°C, and ideally, the devices should be kept in a location with a temperature between -20° and 45°C. The same applies to smartphones from [Company Name]. Samsung and other brands.

Another important factor is to avoid using the screen at maximum brightness, as high brightness levels consume more energy and generate more heat than when you are indoors or in the shade.

Close background apps

If turning off your phone isn't an option, restart the device and avoid, as much as possible, leaving apps running in the background so the processor doesn't become overloaded and have to expel even more hot air.

On Android, simply open the app drawer and then click "Close all".

On iOS, there isn't a command to close all apps at once, because the system automatically manages background apps, which are paused and consume few resources.

Forcing a complete shutdown does not reduce overheating and may even increase power consumption by requiring applications to be reopened. On hot days, the recommendation is to activate Low Power Mode, reduce screen brightness, and avoid using resource-intensive applications when the device is already warm.

Do not put the appliance in the freezer.

Despite the temptation to quickly cool down an overheated device, never place it in the freezer or refrigerator. This practice causes a violent thermal shock that can crack components, but the greatest risk is internal condensation: the sudden temperature change transforms the vapor into water inside the electronic device, causing oxidation and irreversible short circuits on the motherboard.

The technical recommendation for safely lowering the temperature is to immediately turn off the equipment, remove any protective covers that retain heat, and allow it to cool gradually in a well-ventilated, shaded location.

Pay attention to IP certification.

Another common mistake is to blindly trust in IP certification (Ingress Protection) under strong sunlight. It is crucial to clarify that this standard only certifies resistance against the ingress of solid (dust) and liquid (water) residues, offering no protection against high temperatures.

Ironically, the airtight construction required to make a device "waterproof" can work against it in the heat: the seal prevents air circulation, hindering heat dissipation and creating an internal greenhouse effect. Furthermore, excessive heat can soften the adhesives and dry out the sealing rubbers, negating the IP protection and leaving the device vulnerable to liquid ingress precisely when the user least expects it.

Many consumers are misled by the IP69 (or IP69K) certification, believing it protects the device against summer heat. It's important to read the fine print: this standard guarantees maximum protection against powerful, high-pressure water jets and... high temperature (up to 80°C), typically used in heavy-duty industrial cleaning.

In other words, the thermal resistance mentioned refers exclusively to the temperature of the water that reaches the outer casing during washing, and not to the ability of the internal components (such as the processor and battery) to withstand a hot environment. Therefore, an IP69K rated cell phone left on a car dashboard in the sun will suffer the same overheating damage as any other, because the external seal does not prevent the heat from "cooking" the electronics inside.

Take breaks between video recordings.

Video capture is undoubtedly one of the tasks that most stresses a smartphone's hardware. The continuous processing of high-resolution images, coupled with file encoding and image stabilization, forces the processor to operate at maximum capacity, generating heat quickly. On hot days, this elevated internal temperature combines with ambient heat, creating a critical scenario that drains the battery and can force the device to shut down.

If you work with content creation or are simply recording your vacation, avoid long, continuous recordings, especially in direct sunlight. The ideal recommendation is to break up the footage into short clips and take frequent breaks to allow the device to dissipate heat. Remember: the higher the recording quality (such as 4K or 60fps), the faster the phone will heat up, requiring even shorter breaks.

Always use reliable chargers.

This is another rule that seems basic, but few people follow: it's quite common, when traveling and forgetting the original charger at home, to buy a cheaper charger. And here lies the danger, as these chargers can overheat the battery or even take longer to fully recharge it.

Therefore, if possible, always use original chargers or buy a well-known brand instead of something more generic. In addition to the charging power (ideally at least 15W), check the type of plug and, of course, always opt for portable chargers from original brands to avoid damaging your cell phone.

Keep your software up to date.

As mentioned above, nowadays, smartphone manufacturers have created techniques that interrupt the operation of some activities on the phone so that the device cools down and doesn't suffer damage. But this will only be activated if your software is up to date, as many features, including security features, are sent with these updates.

So, before traveling to a very hot place or even at the beginning of summer, take some time to update your device and check if all the recommendations are being followed. The most important thing here is to ensure that your smartphone has the latest version and, in cases of high temperatures, that the system knows what to do (including turning it off for a while to avoid damage to the components).

Carry out periodic reviews

Often, cell phones overheat or slow down simply because they are overloaded. Just like we do with a computer, it's important to perform a digital "clean-up" from time to time. Check which apps you no longer use and uninstall them, as they may be running in the background and consuming processing power (and battery) unnecessarily.

Additionally, keep an eye on battery health through the system settings and check the internal storage. A device with full memory requires more processing power to perform simple tasks, which generates more heat. Keeping the system clean and organized helps the hardware work more efficiently and stay cooler.

Activate energy saving mode.

It's a mistake to think that this feature is only useful when the phone has 5% battery left. Power saving mode is an excellent tool for temperature control, as it limits the processor (CPU) speed, reduces screen brightness, and suspends resource-draining background activities.

Therefore, if you're going to spend the day outdoors in a hot place or know it will take a while to find an outlet, proactively activate power saving mode, even with a full battery. By requiring less power from the device, you not only extend battery life but also prevent the phone from overheating during use.

Did your smartphone overheat during the summer? How did you deal with the problem? Tell us in the comments! Comment!

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With some info: USA Today l CNET l El País l Apple l Samsung