Some models of Samsung Electronics’ latest smartphone Galaxy Note 20 Ultra and tablet Galaxy Tab S7 series are reporting green algae, Sam Mobile and other foreign media reported on the 24th (local time).

According to reports, green algae occurs when the display of the Galaxy Note 20 Ultra and Galaxy Tab S7 series is set to a low brightness level. Currently, only models with the Snapdragon 865 chipset are considered to be affected.

In particular, the green algae phenomenon has occurred only in smartphones equipped with an OLED panel, but this time it is reported that it is also reported in the Galaxy Tab S7 equipped with an LCD panel.

The green algae phenomenon often occurs in OLED smartphones. In April of this year, green algae occurred on the Galaxy S20 Ultra display, and in June afterwards, it occurred on some models, such as ▲Galaxy Note 8 ▲Galaxy Note9 ▲Galaxy S9 series ▲Galaxy Note 10 Lite.

In addition, there have been reports of green algae in several smartphones equipped with OLED panels such as iPhone 11 series, Google Pixel 4 series, OnePlus 8 Pro, and OnePlus Node.

The green algae phenomenon of OLED smartphones is known as a software problem. Previously, Samsung Electronics solved the problem through software update.