EZFi is a free Android app developed by D-Link Corporation that provides an easy and convenient way to manage and configure your D-Link mobile router. With this app, you can check your Internet connection status, signal strength, connection settings, SIM card PIN, data roaming, and more. You can also check your data usage and set up notifications to alert you when you are nearing your usage limit.

One of the best features of this app is the ability to configure a wireless network to share your mobile Internet access with all your devices. Additionally, you can see what devices are connected to your network, and give or block access to specific devices. You can even send and receive SMS messages on your mobile network.

Please note that the available features vary depending on which mobile router you are using the app with. The EZFi app works with DWR-932C, DWR-932C B1, DWR-932C E1, and DWR-933 B1.

Overall, EZFi is a great tool for anyone who needs to manage and configure their D-Link mobile router on the go. Its user-friendly interface and useful features make it a must-have app for D-Link router users.