TFTP CS is a simple and lightweight TFTP client and server available for Android. This utility allows users to easily transfer files between devices using the TFTP protocol.

The TFTP server can be configured to accept requests only from a specific IP address or subnet, providing an added layer of security. Additionally, the server can run side by side with multiple TFTP clients, allowing for simultaneous file transfers.

One of the notable features of TFTP CS is that all tasks are handled by a background service. This means that even while file transfers are in progress, users can close the app without interrupting the process.

It's worth mentioning that due to Android's design, the server cannot listen on the standard port 69, as the operating system does not permit listening on ports belowHowever, this does not hinder the functionality of the TFTP CS.

Overall, TFTP CS is a reliable and efficient tool for transferring files using the TFTP protocol on Android devices. Its simplicity and lightweight nature make it a convenient choice for users in need of a TFTP client and server.