Apple recently admitted that its iPhones are indeed experiencing power issues. Users from all over the world have complained about these power issues and are starting to question if the devices are safe to use.

China Consumers Association (CCA) has since sent a notice accusing Apple of not being able to "meet the basic consumer need for normal wireless communication." The company then admitted to Chinese authorities that a small number of the iPhone 6s handsets were indeed shutting down even though users attest that they still had about 30 percent of battery left.

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Apple dubbed the issue as the "30 percent bug" and went on to reveal that the affected handsets were manufactured between September and October 2015. According to TechRadar, the company claims these handsets contain a certain battery component that was exposed to an increased amount of controlled ambient air before being assembled into battery packs. Thus, these batteries degrade faster and may cause the device to shutdown unexpectedly.

Although Apple assured its customers that the iPhone battery issue was not a safety one, people remain in doubt. These doubts come due to several claims by Chinese customers that they have witnessed their iPhones catching fire. For instance, the Tech Times reported that in August, a woman alleged that her iPhone 6 Plus caught fire and it caused the screen of the device to shatter.

Apple has defended itself from the allegation by conducting a series of tests, and reported that the cause of the iPhone explosion was due to an "external physical damage."

The CCA said that in a span of two months, complaints against Apple products have increased six-fold. Although the company said that their engineers are already working on a software update to address the battery issues, the CCA and several iPhone users remain unconvinced.