Recovering deleted chats is often complicated, especially if you don't have a backup. Here are some possible methods and tools, but please note that the actual results may vary depending on the device and application: 1. **Data recovery software**: There are many third-party data recovery software that can help recover deleted chat history, such as: - Dr.Fone - EaseUS MobiSaver - Tenorshare UltData - DiskDigger These tools usually require you to connect your phone to a computer and scan the device storage for deleted data. 2. **Recovery option within the chat app**: Some chat apps (such as WhatsApp) may provide an option to recover chat history, especially in specific circumstances (such as changing devices, reinstalling the app, etc.). 3. **Cloud sync**: If your chat app supports cloud sync (such as WeChat, WhatsApp's cloud backup), you can try to restore previous chat history through this feature. 4. **Contact application support**: Sometimes, it may also be helpful to contact the application's technical support, and they may have better suggestions. Please note that when using any data recovery tool, never perform additional file write operations on the device, as this may overwrite the deleted data and reduce the chances of successful recovery. Also, make sure you use reputable software to avoid leaking your personal privacy or causing other problems.