Instabridge does not provide a phone number or SMS capability for its Spain eSIM plans, so travelers cannot send or receive standard phone messages or calls via a local number. The service offers only a data‑only connection.
If you need to communicate while in Spain, you can rely on popular VoIP applications such as WhatsApp, Telegram, iMessage, or similar. These can be used over the data connection, though some destinations may block or restrict specific apps, so it is advisable to confirm that the services you need are accessible in Spain before purchasing.