Yes, Roamify offers eSIM plans for Guernsey that include a phone number and SMS capability. The plans that provide telephony range in price from $15.00 up to $120.00 USD and validity from 7 days to 365 days. The phone numbers come with the dialing code +33, which is a local code for Guernsey, and both inbound and outbound voice calls are supported. In addition, inbound and outbound SMS are available. Travelers should confirm specific requirements directly with Roamify before purchasing.