Samsung is the latest major smartphone manufacturer to suffer a public design issue after reports of a gap between the screen and metal body of the new Galaxy Note 4 handset.

The device has gone on sale in the firm's native South Korea and some early buyers have taken to social media to show the gap, which is large enough to slot a business card into.

However, the South Korean firm moved quickly to assured customers the Note 4 is not compromised by the presence of the gap.

"The reported issue does not impact the functionality or quality of the Galaxy Note 4," said a spokesman.

The incident follows the flaw that affected Apple's new iPhone 6, where some users reported their device was warping out of shape in some situations - such as when sat on in a back pocket.

At the time, Samsung posted an image on social media of a bent iPhone bowing to the firm's Note 3 device with the caption "bend to those who are worthy".