noun
initial defect; early failure
Refers to a defect or malfunction present from the start, often used in manufacturing, electronics, and product warranties.
購入したスマートフォンに初期不良が見つかった。
An initial defect was found in the smartphone I purchased.
初期不良の場合は、無料で交換いたし
In the case of an initial defect, we will replace it free of charge.
Compound of 初期 (shoki, 'initial') and 不良 (furyō, 'defect, failure').