Realme 3 Burned In Trouser Pocket, Why Did The Phone Explode? And how to prevent it

Quite a trend last night smartphone Realme 3 caught fire and exploded in his trouser pocket causing burns to his thighs.

Burns due to cell phone exploding..

Realme 3 phone on fire

This is not a hoax.

This problem has been resolved with realme by displaying a warranty on replacing the cellphone with a new one.

This case has now been completed, in a good response by the Realme.

We’ve probably heard rumors of cell phones exploding over the years. The iPhone exploded, the Samsung Note 7 was recalled due to the same problem, Xiaomi caught fire, and now the realme.

Although the chances are small, but it can happen to anyone. Let’s find out how to prevent it.

Why did the cell phone explode? (And how to prevent it)

Although these accidents are extremely rare, they are rather elusive. Why did the phone explode? And how do I know that my phone won’t explode?

Thermal Runaway Causing Phone Explosion

Whenever a Li-ion battery explodes or catches fire, it undergoes a process called thermal runaway. This process can be a little tricky to understand, so we’ll keep things short, sweet, and free of dense scientific jargon.

Lithium-ion batteries contain a large number of Li-ion cells. Each of these cells has a critical temperature — think of it as a boiling point. When the critical temperature of the cell is reached (due to external heat, overcharging, breakdown, or poor manufacturing), it enters exothermic breakdown. Basically, the cell itself starts to release a lot of heat.

This starts the heat escape process, which is essentially a factual feedback loop (like when you put a microphone next to a speaker). Once a cell enters exothermic and releases heat, the surrounding cells are destined to reach their own critical temperature. Depending on the speed of this process, the behind-the-scenes battery may hiss out, catch fire, or make a small explosion.

Now that we understand the thermal escape process, it’s much easier to determine how, when, and why cell phones (among other Li-ion devices) explode.

However, if your phone or other device has a swollen battery, replace the battery as soon as possible.

Don’t Store Your Phone in Hot Places

Too much heat can destroy the battery, along with other components inside. Well, the same is true for cell phone batteries.

When the Li-ion battery is discharged at high temperatures (in an area directly exposed to sunlight or in a trouser pocket while driving or on the dashboard of a car exposed to sunlight), the cells can become a bit unstable. They may not enter an exothermic disturbance, but they can briefly, deteriorate, or (oddly enough) produce gases such as oxygen and carbon dioxide. These gases can cause the battery to inflate like a balloon, which creates pressure (energy that can cause an explosion) or compromises the structure of the battery.

Naturally, this process can speed up if the Li-ion is temporarily charged at a high external temperature. That is why most of the phones will either stop the charging process or turn off if they overheat.

That said, your phone probably won’t explode after being left in a hot car for a day. And while tight jeans can cause thermal runaway, these slow forms of mechanical deterioration generally cause the battery to fail before it has a chance to explode. In addition, the phone and Li-ion battery have built-in safety features that prevent slow-forming mechanical issues. Keep in mind that these security features generally result in your phone shutting down.

Use a Reliable or Certified Original Charger, Don’t Use a Cheap Adapter

In general, any charger will work with any device. An outdated or cheap micro-USB cable will do the job with newer phones, and a new super-fast charger will do the job with older devices. But you should probably stick with a good charger from a good brand, or a charger certified by your phone manufacturer.

Cheap or unauthorized chargers (especially bad wireless chargers) can overheat and destroy the phone’s battery. Usually, this malfunction occurs over a long period of time, and it gives rise to a battery drop or bloat. Again, slow mechanical damage like this will almost always destroy your phone before it can catch fire.

Although the Phone has a built-in voltage limiter which prevents overcharging or charging that is “too fast” for the battery to handle. But cheap chargers generally do not have complete protection and generally use less quality components. Remember there is a price there is quality.

Don’t Bend or Puncture Your Phone

When a Li-ion battery is physically damaged, it can short circuit, build up gas, or catch fire on the spot. Unless you are disassembling your phone or destroying it for fun, this is not an issue you need to worry about. When dropping the phone, important components such as the screen will generally break before the battery is damaged.

Why this happened? Well, a Li-ion battery contains a thin sheet of lithium and a thin sheet of oxygen. An electrolyte solution separates these sheets. When the solution is broken or punctured, the lithium and oxygen layers react, leading to exothermic breakdown and thermal runaway.

In some cases, this can happen while changing the phone battery. Puncturing or bending the Li-ion can cause mechanical damage, and if the battery is not handled properly during installation, it can catch fire (immediately or over time). Recently, a woman’s iPhone caught fire after a battery was replaced at an unofficial counter.

Also, as a side note, don’t poke the battery for fun. You may be able to get away from a fire or small explosion, but you won’t be able to get away from the toxic gases released by a burning li-ion battery.

Most of the Explosions of Cell Phones Are Due to Poor Manufacture

Li-ion batteries contain lithium, a very unstable metal. Instability is good for holding and transferring electricity, but can be catastrophic if mixed with other metals improperly. Unfortunately, Li-ion batteries must also contain nickel, cobalt, and graphite. During the manufacturing process, these metals can form deposits on factory equipment, which can then contaminate the innards of Li-ion batteries and cause chemical instability, short circuits, and explosions.

Poor assembly can also be a problem. Like a skyscraper or a car, Li-ion batteries are welded together from various bits and pieces, and poor welding can cause a lot of electrical problems. This resistance (friction) creates heat, which can cause short circuits and mechanical problems in a very short period of time.

Relax, Your Phone Probably Won’t Explode

During the entire Galaxy Note 7 controversy, about 90 Galaxy Note 7s exploded, caught fire, or overheated. That’s less than 1% of the 2.5 million Note 7 Samsung delivered to stores. Of course, Samsung’s global recall might keep these numbers from getting any higher, but it’s clear that phone explosions are extremely rare.

Even so, there are some things you need to do to prevent Leda pack from happening on your cellphone, including:

  • Do not store your cell phone in hot areas, such as in your trouser pocket when driving under the hot sun.
  • Use a qualified or certified charging device,
  • Do not puncture or bend your phone.

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