Technically, under certain conditions, data recovery is possible, but the actual situation is complicated and involves technical, legal, and privacy issues. The following points need to be noted: 1. Technical possibility • Many modern communication tools (such as WeChat, WhatsApp, Signal, etc.) will "completely delete" when deleting messages (that is, the data is marked as free space from the storage device), and data encryption, overwriting, etc. may be enabled. In this way, even if professional data recovery tools are used, it is not necessarily possible to recover the deleted information. • Some professional mobile phone forensics or data recovery software and tools may be able to recover some deleted records if the device meets certain conditions (such as jailbreaking and not overwriting a large amount of new data). However, this usually requires professional technicians to operate, and the success rate of recovery cannot be guaranteed. 2. Legal and privacy issues • If you try to recover chat records from someone else's mobile phone without the explicit authorization of the device owner, this behavior may be suspected of violating privacy rights and violate relevant laws in some places. Obtaining or recovering personal communication records without permission may result in legal liability. • If there is a legitimate investigation or suspicion (for example, involving a criminal or civil case), it should generally be conducted through legal procedures by professional evidence collectors under the supervision of law enforcement agencies to ensure legality and the validity of the evidence. 3. Practical suggestions • If you attempt to recover data on your own simply out of suspicion of "something hidden", it is recommended to communicate with the other party first to see if the misunderstanding can be cleared up. • If you do suspect that there is misconduct and have good reason to investigate, you can consider obtaining help through legal procedures (such as calling the police or contacting relevant professional organizations) instead of using technical means on your own. In short, although it is technically possible to recover some deleted data in some cases, in fact, it is subject to software security mechanisms, device status, and laws and regulations. Unauthorized or illegal acquisition of other people's information has huge risks and unpredictable consequences. It is recommended to act in accordance with the law and respect the privacy rights of others when dealing with such issues.