Show on Mobile, Desktop
To display the icon on both Mobile and Desktop devices
Navigate to Click to Chat → Display → Devices.
Under the Devices card in Display settings:
Select the ‘Show’ options for both Desktop and Mobile.

Show only on Mobile ( Hide on Desktop )
To display on mobile: In the Devices card, select ‘Show’ for Mobile.
And
To hide on Desktop: In the Devices card, select ‘Hide’ for Desktop.

Hide on Mobile ( Show only on Desktop )
To display only on Desktop: In the Devices card, select ‘Show’ for Desktop.
And
To hide on Mobile: In the Devices card, select ‘Hide’ for Mobile.
