To activate mobile internet on your Emtel SIM, you primarily need to configure your device's Access Point Name (APN) settings and then purchase a data pack.
Configuration to activate Internet on your smartphone - Emtel Activate Emtel Internet Mobile
Ensure the "Mobile Data" toggle is turned ON in your phone's settings. To activate mobile internet on your Emtel SIM,
Switch your device OFF and ON again after saving new APN settings. Activate Emtel Internet Mobile
If you still cannot connect after these steps, ensure the following:
Send SUB to 8284 . For example, send SUB 21 for the daily Rs 21 pack.
Dial *100# on your phone and select your preferred pack from the on-screen menu.