The flash doesn't light up as brightly as it normally would, but the dimly-lit flash is still easily noticeable, reported users on the XDA Developers forum on Wednesday. So far, the US carrier T-Mobile units of the Galaxy S6 and some unlocked units sold in Saudi Arabia reportedly have the issue.
Samsung has been made aware of the bug by consumers, and as per XDA report company has assured it will provide a firmware fix, but didn't detail any time-frame.
"Unfortunately, we are unable to speculate on software updates," Samsung replied to XDA.
Earlier there were reports that some Galaxy S6 Edge units shipped by T-Mobile in the US had defective displays out-of-the-box, including scratched screens and dead pixels.
Meanwhile on Thursday, Samsung said that the company expects record shipments for its new Galaxy S6 smartphones and may struggle to meet demand for the Galaxy S6 Edge due to production constraints. Samsung expects the flat screen Galaxy S6 to sell more than the higher-margin Galaxy S6 Edge - priced about $120 more in South Korea.