GNU/Linux KDE Neon Installing oFono Phonesim – Step by step Guide
How to Install oFono Phonesim in KDE Neon LTS GNU/Linux Desktop.
And oFono Phonesim for KDE Neon is a Modem Emulator that oFono uses for development and testing. This allows oFono to be used by any host without requiring special GSM (or other) hardware.
Moreover, oFono is a stack for Mobile Telephony Devices on Linux. oFono supports speaking to Telephony Devices through specific Drivers, or with generic AT Commands.
Finally, this guide includes detailed instructions on Getting Started with oFono Phonesim on KDE Neon.

1. Launching Terminal
How to QuickStart with Command Line on KDE Neon GNU/Linux
First, Update the Apt Repo Sources with:
sudo apt update
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
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