一些 M4 iPad Pro 用户报告 OLED 显示屏上存在颗粒状伪影，尤其是在黑暗环境和中低亮度下。 Some M4 iPad Pro owners report grainy artifacts on OLED displays, particularly in dark environments and low-medium brightness.

一些新的 M4 iPad Pro 用户报告称，OLED 显示屏上出现了明显的颗粒状伪影，这种问题在黑暗环境和低到中等显示屏亮度下最为明显。 Some new M4 iPad Pro owners report a visible grainy artifact on the OLED display, with the issue most noticeable in dark environments and low to medium display brightness. 用户将该效果与使用高 ISO 设置拍摄的照片进行了比较，仔细观察时，颗粒感更加明显。 Users have compared the effect to a photo taken with high ISO settings, with the grainy appearance being more apparent when closely inspected. 目前还不清楚该问题的严重程度以及苹果是否会解决这个问题。 It is not yet clear how widespread the issue is or whether Apple will address it.