Samsung announces results for the Galaxy Note7 event and launches a series of solutions
After several months of in-depth investigation and analysis, Samsung Electronics held a press conference in Seoul today, and announced the results of the investigation on the Galaxy Note7 incident with three independent independent research institutions around the world. At the same time, it announced a series of measures to avoid similar events.
DJ Koh, President of Samsung Electronics Wireless Division, introduced the process and results of the survey: "In conclusion, the reason for the loss of Galaxy Note7 is the battery. In order to pursue innovation and design, we set the specifications and standards for the Galaxy Note 7 battery. And the problems in the design and manufacturing of this battery, we failed to find and confirm before the release of Note7, we are very sad and sorry."
DJ Koh further explained at the press conference that in the past few months, Samsung has invested more than 700 engineers and tested 200,000 mobile phones. The A battery recalled for the first time and the B battery recalled for the second time are different. Among them, the battery A is mainly caused by the extrusion of the negative electrode plate, and the battery B is melted due to the copper foil, which indicates that it is the source of the accident.
In the past few months, in order to find out the reasons for the Galaxy Note7 incident, Samsung has carried out detailed investigations. During the investigation, Samsung carefully reviewed the hardware, software, and related processes of the Galaxy Note7, such as assembly, quality inspection, and logistics. In order to reduce the burning process, Samsung used more than 700 company researchers and engineers to build large-scale experimental devices, tested more than 200,000 assembled mobile phones and more than 30,000 batteries, further clarifying the root cause of the problem.
In the past few months, Samsung has invested in more than 700 engineers and tested 200,000 mobile phones. The A battery recalled for the first time and the B battery recalled for the second time are different. Among them, the battery A is mainly caused by the extrusion of the negative electrode plate, and the battery B is a real accident source due to the melting of the copper foil. In addition, some batteries were found not to use insulating tape.
On the other hand, third parties such as Underwriters Laboratories (UL), Exponent Laboratories, and TUV Rheinland have conducted independent investigations into the possibility of a Note 7 incident.
First, UL conducted the first phase of investigation on ten damaged devices. The survey results show that the reasons for assembly, manufacturing and battery design are both present. Manufacturing reasons include the lack of bumps on the tabs, resulting in internal short circuits; the battery design includes a thinner isolation film, resulting in poor protection. In short, the production and design of the battery led to the explosion of Note 7.
Secondly, in the investigation of the Exponent laboratory, there is a damage to the cathode membrane in the battery of Company A, which is likely to cause damage to the separator and eventually cause fever. Although the battery of Company B does not have the defects of Company A, there are some new problems, such as bending of the electrode plate, etc., so that the cathode plate and the anode plate may come into contact, thereby causing a short circuit. The reason for this is that the bonding of the above-mentioned joint portion is caused by the joining process, thereby causing contact of the electrode plates.
Finally, TUV investigated specific factors related to the battery in the logistics system. The results showed that there were no obvious weaknesses in the Samsung factories in Vietnam and South Korea.
For the Note7 incident, Samsung said it will learn the lesson and develop an "eight-cell battery safety inspection measure" to ensure the battery is safe and reliable. The "8-cell battery safety inspection measures" include safety inspection, battery appearance inspection, X-ray inspection, battery disassembly inspection, TVOC inspection, ΔOCV measurement, charge and discharge inspection, and safety inspection in user use scenarios. At the same time, Samsung also adopted the “Multilayer Security Measures Agreement†during the product planning phase. The improved Multilayer Security Protocol will enforce strict security standards for each part of the equipment, including overall design and materials used, equipment hardware strength and capacity, and improved software algorithms to achieve a safer battery. Charging temperature, charging current and charging duration. In addition, Samsung has set up a team to focus on the development of 12 core components of mobile devices.
Since August 2, 2016, the global release of Note7 to October 11, 2016, Samsung announced the full recall of Note7, Samsung has experienced 70 days of full of twists and turns.
The following are the key nodes of the Note7 explosion:
August 24, 2016
South Korea has the world's first Samsung Note7 bombing. It is reported that a user who got Note7 in advance in Korea, the phone suddenly exploded when charging at night, and the phone was seriously damaged. A similar explosion occurred in the United States, Australia and other countries.
August 31, 2016
Note7's successive bombings have increased Samsung's vigilance. On this day, Samsung announced that it would conduct additional quality control tests on the Note7 phone, thus delaying the delivery time of the phone. Samsung previously said that the demand for Note7 far exceeded expectations, which once caused a supply shortage.
September 2, 2016
Samsung held a press conference, Samsung Mobile Division President Gao Dongzhen publicly apologized for the Samsung Note7 battery explosion, and officially announced the recall of 2.5 million Samsung Note7 sold worldwide. At that time, Samsung received 35 explosion reports. . Samsung said that Korean users can replace their new phones from September 19. However, for the Chinese market, Samsung said that the National Bank Note7 is not in the scope of recall because it did not use the battery provided by the problem supplier.
September 8, 2016
More than 10 countries including the United States, Australia, Japan, Singapore, Canada, and India have announced that they are prohibited from using Note7 on their aircraft or charging them. Some airlines also include it in the list of prohibited shipments. The US Consumer Product Safety Commission issued a warning on the 9th to urge consumers to stop using Note7 phones.
September 12, 2016
Affected by the Samsung Note7 recall, Samsung's stock hit a record low since August 2012, reaching 1.465 million won per share.
September 13, 2016
In order to avoid the continued explosion of Samsung Note7, Samsung tried to control the situation through software upgrades, and urgently pushed the OTA update for users, and limited the charging power of Samsung Note7 to 60% in the system update.
September 14, 2016
After an interview with the General Administration of Quality Supervision, Inspection and Quarantine, Samsung China announced that it will recall some of the Banknote Notes7 manufactured during the period from July 20, 2016 to August 5, 2016, starting from September 14. There are 1,858 units in mainland China. For Note7 within the scope of recall, Samsung China will replace a new mobile phone of the same model that meets the relevant requirements for users to eliminate security risks.
September 18, 2016
Samsung Samsung Note7 appeared in the first explosion, the netizen named "Chihuahua You" posted in Baidu Note7, the Samsung Line7 Coral Blue, which was purchased from Jingdong, exploded. The netizen said, "Sitting on the bed and playing the phone suddenly black screen, The mobile phone began to shake, and then exploded." In addition, the netizen also posted a national bank invoice for Jingdong to buy a mobile phone.
September 19, 2016
In response to netizens exposing the National Bank's Note7 battery explosion, Samsung battery supplier ATL issued a statement on its official website, saying that after preliminary research, the combustion of the sample is not directly related to the battery it produces, and it is speculated that the heat source is from outside the battery body. There may be other external factors that cause fever problems.
September 29, 2016
Samsung said today that the company did not fully consider the feelings of domestic consumers in the National Bank's Note7 bombing incident and made inadequate explanations. Therefore, it expressed its sincere apologies to Chinese consumers. Samsung also stressed that there is no double standard for the Chinese market on the recall issue.
October 5, 2016
A US user on the flight got the so-called Note7 Secure phone, but there was still an explosion. According to the user's description, the Note7 was turned off at the time, but the fuselage suddenly became hot and smoked. When he saw this, he immediately took the phone out of the clothes and threw it on the floor. Soon the phone Burnt the carpet.
October 9, 2016
US mobile operators AT&T and T-Mobile announced that they will no longer renew Samsung Note7 and refuse to sell Samsung Note7. Samsung Note7 users who are using the carrier's customized version can choose to exchange AT&T for other Samsung phones or other brands.
October 11, 2016
Samsung announced today that it will permanently stop producing Note7 phones, requiring all partners to stop selling and replacing Note7, and forcing Note7 users to shut down and stop using them, including those with original phones and those that have been replaced. At the same time, Samsung China announced the recall rules of the Bank of China Note7, promised to return the goods for consumers from October 14 to December 31. If the user chooses to return Note7, Samsung will refund an additional subsidy of 200 yuan. After purchasing the S7 edge and S7 consumers after the return, Samsung will provide a subsidy of 600 yuan.
January 1, 2017
Samsung said that from January 1st, 2017, the original purchase channel of Note7 will not be returned. Users can bring their Note7 to Samsung after-sales service center to return, but no return subsidy will be provided. If the user chooses to exchange goods, Samsung will provide 300 yuan designated e-commerce shopping vouchers. At the same time, Samsung also said that the recall policy has changed since February 1.
January 10, 2017
Samsung officially announced that it has recalled more than 96% of Samsung Note7 worldwide, and the remaining 100,000 mobile phones have not been recalled.
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