In recent days, many crypto enthusiasts have been paying attention to a topic—what should you do if you're called in by public security authorities for an investigation related to crypto matters? The key point that many people haven't realized is: never easily hand over your phone.

There was a case some time ago where law enforcement officers told the involved person, "Just cooperate with the inspection, and we'll return it to you after." He almost agreed. Fortunately, he remembered the evidence collection rules and insisted until a lawyer was present. Why be so strict? Because the consequences can be very serious.

Now, evidence collection technology has advanced. Many law enforcement agencies are equipped with professional evidence collection devices. As soon as your phone is connected, all data on it can be fully backed up—deleted chats, wallet transaction records, hidden files—all are exposed. Do you remember the backup controversy with that old wallet? Some users found that restoring the backup to another device allowed direct login to the wallet and asset management. In other words, once your phone is used for evidence collection, your crypto assets are essentially exposed.

Why would they try to trick you into handing over your phone? Simply put, because following proper procedures is too troublesome. According to Article 41 of the "Rules for Electronic Data Evidence Collection in Criminal Cases by Public Security Organs," retrieving electronic data must be approved by the case officer and a formal "Evidence Retrieval Notice" must be issued. If they need to seize your phone, they must also produce a "List of Seized Items," clearly stating the brand, model, color, and serial number.

These regulations may seem cumbersome, but they are actually designed to protect your rights. The difference between someone who understands the law and someone who doesn't is huge in such moments. Compliance first, safety is guaranteed.