Samsung says bad battery design and a rush to release an updated version of the Galaxy Note 7 caused some of the devices to overheat and explode in a new report issued Sunday night.
The company said in the report that two separate battery malfunctions caused some Note 7 phones to overheat and catch fire in some cases.
The first affected the first batch of Note 7 phones that launched last fall. In those phones, the battery was too large for the casing of the phone, which caused some to overheat, according to Samsung’s report.
After Samsung recalled the initial batch of Note 7 phones, it manufactured the phone with a battery from a different supplier. But Samsung was in a rush to get the new phones out, and the battery produced had a defect that also caused it to overheat, the report said.
In the end, Samsung ended up recalling all Note 7 phones and canceled the product altogether.
Samsung says it has developed a new eight-point battery check to make sure future devices don’t suffer the same fate as the Galaxy Note 7. The test includes an X-ray of the phone and extreme testing conditions that force the battery to work harder than normal. The company also formed a new group of third-party battery advisors that includes professors from the University of Cambridge, UC Berkeley, and Stanford University.
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