The entire battery issue with Apple's previous generation smartphone, the Apple iPhone 6s, was somewhat downplayed by the company when it was first brought to light. The issues was further placed under the mat following the entire exploding-issue of its direct competitor's flagship, the Samsung Galaxy Note 7.

Now, reports are revealing that the problem has ballooned to become such a widespread issue. The Korean Agency for Technology and Standards (KATS) have now launched their own investigation into the matter to try to prevent a similar incident with Samsung's Note smartphone.

Apple had already released several statements regarding the iPhone 6s' battery problems. They have claimed that it only affects a small batch of smartphones that were apparently exposed to ambient air much longer than planned.

The company has even launched an official battery replacement program on its website asking customers who purchased models that were manufactured between September and October 2015 to approach their service centers.

The company is also claiming that the issue itself is only limited to the iPhone 6s. But reports have revealed that the problem may not be as isolated as Apple claims it to be. Several users have also reported the sudden shutdown problem occurring on their iPhone 6 devices as well.

As for the Korean investigation, KATS is currently still trying to determine if the iPhone 6s' problem could pose the same threat as the exploding batteries on the Samsung Galaxy Note 7. If it does deem it to be so, the agency has the power to initiate a nation-wide recall.

Apple, on the other hand, has reiterated multiple times that the unexpected shutdown problem does not pose a significant safety hazard to users. It added saying that that there is really nothing to be alarmed about.

Those who are experiencing the problem can avail of Apple's free battery replacement program by using the company's serial number checker to determine if their unit is eligible. iPhone 6 users are of course advised to back up all their pertinent data before handing over their device to authorized service providers.