ZenSim eSIM Data Plans for Bulgaria

ZenSim does not provide a truly unlimited data eSIM for Bulgaria. All ZenSim plans for Bulgaria have a fixed data allowance. For example, the Bulgaria 40GB plan is valid for 30 days and costs $45.00 USD, while the Bulgaria 20GB plan comes in 10‑day and 30‑day versions for $23.00 and $24.00 USD respectively.

Some plans have “Unlimited” in their name, such as the Europe+ Unlimited STANDARD plans, but they include a daily cap of 3GB/high‑speed data and use a reduced speed after the threshold. Choosing a fixed data plan may be more cost‑effective unless the user requires extensive high‑speed data usage.

ZenSim does not offer eSIM plans that include a local phone number or SMS capability in Bulgaria. Only data‑only eSIMs are available from this provider.
If you need to make calls or send messages while traveling in Bulgaria, you can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection provided by the ZenSim eSIM.

ZenSim currently offers seven single‑country data plans that can be used exclusively in Bulgaria, along with 15 multi‑country options that include Bulgaria among the destinations. Among the single‑country plans, a subset consists of fixed‑data‑amount plans while a couple are daily‑data‑cap plans, meaning the data allowance is refreshed each day of validity. Prices range from roughly $11 to $57, data caps span 3 GB to 40 GB, and validity periods run from 10 to 30 days. Many of these plans also allow tethering, enabling connection sharing with other devices.