Live data from Hacker News

Another replacement Samsung Galaxy Note 7 has caught fire

theverge.com

1–10 of 53 posts

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#2
I think there is a small chance of any modern phone catching fire. I saw a news article about the same thing happening to a new iPhone 7. The first batches of note 7 were defective so they had a higher chance of combustion. I'm pretty sure that's not the case with replacement phones. This is just some sensationalist "journalism".

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#3

I think there is a small chance of any modern phone catching fire. I saw a news article about the same thing happening to a new iPhone 7. The first batches of note 7 were defective so they had a higher chance of combustion. I'm pretty sure that's not the case with replacement phones. This is just some sensationalist "journalism".

This is in no way sensationalism and comparing the unconfirmed single iPhone fire in shipping to a bungled recall in which replacement devices are still defective is a false equivalency.

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#4

I think there is a small chance of any modern phone catching fire. I saw a news article about the same thing happening to a new iPhone 7. The first batches of note 7 were defective so they had a higher chance of combustion. I'm pretty sure that's not the case with replacement phones. This is just some sensationalist "journalism".

That chance seems elevated with the newer Samsung devices. I haven't seen anything close to this for other hardware manufacturers.

The S7 also has had several reports of fires. A family member of mine woke up to her S7 screen completely burned through. A quick search reveals many similar cases.

Samsung has been slow to acknowledge the severity of the issues, which has led to customer support requests via press release such as this article.

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#5

I think there is a small chance of any modern phone catching fire. I saw a news article about the same thing happening to a new iPhone 7. The first batches of note 7 were defective so they had a higher chance of combustion. I'm pretty sure that's not the case with replacement phones. This is just some sensationalist "journalism".

[deleted]

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#7

I think there is a small chance of any modern phone catching fire. I saw a news article about the same thing happening to a new iPhone 7. The first batches of note 7 were defective so they had a higher chance of combustion. I'm pretty sure that's not the case with replacement phones. This is just some sensationalist "journalism".

As the article says, this is three replacement Note 7s catching fire in less than a week (that we know about). If that incidence rate were normal for other devices, I think we would know about it. (And I imagine far fewer people would carry phones around in their pockets.)

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#8

I think there is a small chance of any modern phone catching fire. I saw a news article about the same thing happening to a new iPhone 7. The first batches of note 7 were defective so they had a higher chance of combustion. I'm pretty sure that's not the case with replacement phones. This is just some sensationalist "journalism".

A small chance does not show up with 3 phones catching fire within a week. How many of these phones would have even made it into customer's hands during that time.

I doubt it is eve fair to say there is a "chance" they will catch fire, but let us say there is. What is the "chance" that they will all catch fire within the first few days of use?

This is all quite damning, and unfortunately is probably going to put a dent in Android adoption. With Samsung being the more premium Android brand, I suspect many people will pick-up an Apple instead. But that is just speculation.

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#9
I wonder if this is the reason:

"I inspected the kernel source code. Samsung charges the note 7 battery at just over 4.35v

Older models have 4.35v batteries but only charge to 4.3v.

If you put a generic 4.2v lithium ion battery in, they survive 4.3v with a reduction in charge cycles but anything above that causes formation of metallic lithium dendrites, a non reversible process that eventually causes a fire. This policy makes sense if you have removable batteries as there are lots of fake genuine samsung batteries. But you want maximum battery life using special 4.35v cells. Perhaps they thought with a sealed battery they could hit 4.35v?

The chemistry is not hugely different, just uses more expensive elements. So a factory trying to minimise cost could easily introduce a defect from changing from one type to another etc.

So this tiny change could cause a defective battery to catch fire where it normally would not.

Doesnt matter how you charge it, more how long it sits above 4.30v at ~60-100% float charge.

So samsungs 60% charge resolves 2 issues, peak voltage above 4.3 and energy release on failure.

Imho they need to go back to 4.3v policy rather than just replace and assume its a once off.Lithium batteries used in phones dont catch fire without physical damage like a knife or overvoltage. That's why this is so unusual.

Ps kernel source is available from samsungs website because android is based on linux.

Tldr: policy change from 4.3v float charge to 4.35vwhich I have confirmed by examining source code available on samsungs website would explain the fires"

[1] https://www.reddit.com/r/Android/comments/560luq/slug/d8fhh2...

Re: Another replacement Samsung Galaxy Note 7 has caught fire

#10
Harsh but well said:

"At this point, it’s irresponsible for us to say anything else: If you own a Samsung Galaxy Note 7 you should immediately stop using it and return it for a refund (...) The Samsung Galaxy Note 7 is a fundamentally defective product and it should be pulled from the market without delay."

Not sure what's going on, but it looks like Samsung is handling this extremely poorly.

Post reply on HN