Samsung Galaxy Note 7 Recall: Engineers Explain Why Phones Caught Fire

Samsung has yet to reveal the exact reason for several Samsung Galaxy Note 7 phones to explode and catch fire. But an engineering firm has revealed some details about what caused it.

Instrumental, a manufacturing technology firm, took it upon themselves to formulate their own theories and pinpointed the flaws of the model, which was launched back in August. Based on its findings, the firm claims that the Samsung Galaxy Note 7 explosions were caused by the battery's large size being crammed inside the phone's small frame.

"The Note 7's lithium-polymer battery is a flattened 'jelly-roll' consisting of a positive layer made of lithium cobalt oxide, a negative layer made of graphite, and two electrolyte-soaked separator layers made of polymer," Instrumental explained in a blog post. "The separator layers allow ions (and energy) to flow between the positive and negative layers, without allowing those layers to touch."

Instrumental went on to state that Samsung were unable to leave space in the device's circumference. The battery's compression inside the device and the frequency of being placed in pockets, resulting in natural swelling, is the root cause of several Samsung Galaxy Note 7 units to detonate and ignite.

The deficiency of the Samsung Galaxy Note 7 has resulted in the company forcing to recall all available units of the model. The huge recall proved to be a fatal blow to the company in terms of financial losses and consumer trust, according to NDTV Gadgets 360.

Since then, the company has made the conscious effort to right their wrongs by releasing apology ads in full pages. Last November, its letter, which was signed by president and CEO of Samsung Electronics North America Gregory Lee, was published in three publications in the U.S. - The Wall Street Journal, The New York Times and The Washington Post.

"An important tenet of our mission is to offer best-in-class safety and quality. Recently, we fell short on this promise. For this we are truly sorry," the ad read, according to The Verge.