There are numerous tools for reverse engineering data in smartphones, especially Android phones. Some useful Android tools are Android Network Toolkit (ANTI), DroidBox, AVD Clone, and Smart Pentest Framework (SPF). The tools covered can support in the recovery of significant information and aid in criminal investigations. Android Network Toolkit is a very useful and efficient application tool. According to the Hackers Online Club website, "This app can map your network, scan for vulnerable devices or configuration issues. It is intended for use by the amateur security enthusiast home user or the professional penetration tester, ANTI provides many other useful features.” Here are some of the features of Android Network Toolkit (ANTI): Provides easier connection to visual sniffing and open ports. Visual sniffing usually refers to retrieving cookies and URLs. The ANTI application also allows the user to perform MiTM attacks, allowing the user to exploit the server and client sides. MiTM is normally used in cryptography and cybersecurity. MiTM is basically eavesdropping. The application also includes a password cracker that determines the strength level of a password. ANTI can also replace an image in Denial of Service attacks and demos. All these features are part of the Android Network Toolkit (ANTI). Another useful application is DroidBox. The purpose of DroidBox is to perform dynamic analysis of other Android applications. The application generates many useful results. These are the results after the analysis is complete: Shows incoming and outgoing network data. It also shows the hashes for the parsed package, the application performs file reading and writing operations. It provides information… in the middle of the document… it will also be integrated with existing tools. Some of these tools are SET, Metasploit and many more. Conclusion Reverse engineering data on smartphones can have positive and negative effects. Many of today's applications were created thanks to Data Reverse Engineering. a positive effect is that the application developer can use Data Reverse Engineering to create a similar or new app from an existing app. An adverse effect would be the creation of an application used to retrieve certain data from an individual or the attachment of an application to other devices. You can also create an application to support criminal investigations and other forensic-related topics. There are numerous applications of forensic tools for all types of devices. Overall, an application created to attack other devices is not always malicious, it just depends on who is using the application.