If the file connects but doesn't browse, the host (SNI) may have been blocked by Airtel in your region. You will need to download a fresh config. Security Warning and Best Practices
Tunneling apps require a consistent ping. A weak cellular signal will cause the VPN to disconnect.
These files often utilize the V2Ray (VMess/VLess) protocol, which is much harder for ISPs to detect and throttle compared to standard SSH.
Join community groups to get the latest "extra quality" files as soon as the old ones expire. Conclusion
You can find Airtel-specific .dt (Dark Tunnel) config files on various tech forums, Telegram channels (search for "Airtel Free Net"), and specialized tunneling websites. Look for files updated within the last 24 hours to ensure the SNI host is still active. Step 3: Importing the File Open the app. Tap the File/Paper icon at the top right of the screen. Select "Import Config."