Air SIM for Japan
No. SMS cannot toggle SMS capability as this is tied to a specific Air SIM you purchase. Please make sure you purchase SORACOM Air SIM card size:XXX(for data/SMS) for SMS functionality.
Global Plan01/Plan01 Low Data Volume/Plan02
SMS functionality is not available.
Global Plan01s/Plan01s Low Data Volume
SMS functionality is included by default and cannot be switched off.