社保卡为什么不能用？这个问题可能涉及到多种原因，以下是基于这个问题的解析以及英文翻译对照：

首先，社保卡不能用可能是由于卡片本身的问题。社保卡损坏、过期或者被冻结都可能导致其无法正常使用。在这种情况下，持卡人需要携带身份证和社会保障局证明前往社保卡发卡银行的柜台进行查询和办理更换、解冻等手续。英文翻译为: Why is my social security card unusable? This question may involve various reasons. The following are the reasons and their English translations:

Firstly, the social security card may be unusable due to issues with the card itself. Damaged, expired, or frozen social security cards may prevent their normal use. In these cases, cardholders need to carry their ID and social security agency certification to the bank where the card was issued to conduct inquiries and handle replacement or unfreezing procedures.

其次，社保卡不能用可能是由于未激活卡片或者密码错误。新办的社保卡在首次使用前需要进行激活，而如果卡片已经激活，但是密码错误，也无法正常使用。在这种情况下，持卡人需要确认社保卡的激活状态，如未激活需要前往社保卡发卡银行进行激活，如密码错误则需要修改密码。英文翻译为: Secondly, the social security card may be unusable due to inactive card or password errors. Newly issued social security cards require activation before their first use, while if the cards have been activated but the password is incorrect, they cannot be used normally. In these situations, cardholders need to confirm the activation status of the social security card and if it is not activated, they need to go to the bank where the card was issued to activate it. If the password is incorrect, they need to correct it.