How long does it take for the police in different places to freeze the bank card and unfreeze it?

According to the law, the normal situation is to unlock it within six months, the fastest is within three days, and the longest is indefinite, which may be permanently frozen. When to unlock depends on the reason for freezing. For example, if a case is involved, it will be automatically unlocked after six months. If the case has not been resolved, the Public Security Bureau can apply for a long-term freezing of your bank card.