guàshī shì zànshí bǎohù hàomǎ, bǔkǎ shì ràng nǐ chóngxīn nádào kěyòng de SIM kǎ

挂失是暂时保护号码，补卡是让你重新拿到可用的 SIM 卡。

Reporting a lost card temporarily protects your number, while replacing it allows you to get a usable SIM card again.