FAST DNS is an Android VPN Service designed for private and secure internet browsing. It is tailored to provide users with a protected online experience. The app operates exclusively with networks supporting the "FAST DNS" protocol, ensuring a secure connection for its users.

Attention is drawn to the fact that FAST DNS will only connect to networks that are compatible with its protocol. If the app fails to establish a connection, it indicates that the network in use does not support the required protocol. This limitation is not a flaw in the app itself but rather a network compatibility issue.