Mobile Data Widget is an Android app developed by Dmitriy Lapayev, a free utility tool that allows users to enable/disable mobile network data transfer. This widget is compatible with Android version 3.1 and above and displays the mobile network type, GSM signal strength, direction of IP PPP traffic, and roaming status. Additionally, users can customize the widget's border color and change its horizontal and vertical size.

However, it is essential to note that for Android 5 and above, the option to enable/disable data transfer is unavailable, and users will be directed to the system settings. The app works best when used in conjunction with the "Wi-Fi Info" widget, which contains the indicator "Network availability." It is worth noting that data transfer via the mobile network depends on the connection state of the Wi-Fi adapter and conditions of the user's mobile operator.

Overall, Mobile Data Widget is a useful tool for mobile traffic control, and its customization options make it an excellent addition to any Android device.