[Note 7 Questions & Answers] BarryH_GEG:
For the OMG! crowd, here's the original article. Some websites are speculating it could be an Exynos model issue. Korean Samsung products as regular XDA'rs know aren't the same as other regions. The fact that the stop-sale only affects Korea most likely means whatever issue is being investigated (Samsung hasn't said the battery, Reuters is hypothesizing it) is Korean-market specific. If it was a problem affecting all Exynos devices and Samsung only halted sales in Korea that would open up huge liability if someone outside Korea was injured or incurred economic loss after the issue was known.

If the issue is h/w related and requires a design or component change Samsung's screwed. They can't fix a problem serious enough to stop sale for future purchasers without applying an upcoming change to phones already sold. If it is a battery issue caused by crappy third party chargers and/or cables the fix could be as simple as a warning label affixed to the phone and changes to the documentation and manuals. Many a Nexi has been fried by crappy USB-C cables so now more than ever it pays to get charging apparatus that can be trusted.

Here's a great list of what's good and what's crap from someone on Amazon who tested various third-party USB-C cables:

https://www.amazon.com/gp/pdp/profile/A25GROL6KJV3QG/ref=cm_cr_dp_pdp

Tech giant Samsung Electronics Co Ltd (005930.KS) said on Wednesday shipments of the Galaxy Note 7 smartphone are being delayed as the firm conducts additional quality control testing for the premium device. The firm also said Galaxy Note 7 shipments to South Korea's top three carriers - SK Telecom Co Ltd (017670.KS), KT Corp (030200.KS) and LG Uplus Corp (032640.KS) - had been halted. "Shipments of the Galaxy Note 7 are being delayed due to additional tests being conducted for product quality," Samsung said in a statement to Reuters.

The firm did not elaborate on what potential problems it was testing for or whether shipments to other countries were being affected. South Korean media reports have said some users have claimed that the battery exploded.

Quality control problems, if confirmed, could deal a major blow to the world's top smartphone maker, which was counting on the Galaxy Note 7 to help maintain sales momentum in the second half when competition is expected to intensify. The phone, which launched in South Korea and other markets on Aug. 19, retails at 988,900 won ($887.23) in South Korea.

Production problems for the curved displays for the Galaxy S6 edge phone resulted in disappointing sales last year, and Samsung risks a repeat this year if it cannot address the Galaxy Note 7 supply problems quickly. Rival Apple Inc (AAPL.O) is expected to unveil its new phones next week.

Hyundai Securities said in a report released on Thursday that the Galaxy Note 7's problems appeared to be related to modules or parts, and that such "malfunctions" should be resolved quickly.

"Such problems can be addressed by replacing parts and modules and changing the design of circuits, so supply problems for the Galaxy Note 7 should ease within a matter of few weeks," the brokerage said, retaining its third-quarter operating profit forecast of 8.5 trillion won.

It was not immediately clear when Galaxy Note 7 shipments to South Korean carriers would resume.​