kàn dào bù shú xī de PIN huò PUK tí shì shí, xiān tíng xià lái wèn yùn yíng shāng, bù yào fǎn fù shì

看到不熟悉的 PIN 或 PUK 提示时，先停下来问运营商，不要反复试。

When you see an unfamiliar PIN or PUK prompt, stop and ask the carrier; don't try repeatedly.