Lempart Flex — unlimited eSIM data for travel

Stop counting gigabytes. Unlimited eSIM data for the whole trip, one clear price, no sign-up to buy. Install before you fly; your own number keeps working.

Each unlimited plan runs a set amount at full speed every day and keeps working, more slowly, once that is spent — the full speed comes back the next day. The days start when the eSIM first connects at the destination, not when you buy it. Data only: no phone number, no calls, no SMS.

Lempart Flex — shortened to Flex — is the customer brand of Lempart LLC, which operates it. It sells prepaid eSIM mobile-data plans through this website, for travel and for longer stays, with terms that differ by destination. You can buy here on the web: there is no app to wait for, no account to create, and support, activation guidance, refund terms and the full plan conditions are linked below.

Destinations and prices · USA eSIM · Europe eSIM · UK eSIM · Japan eSIM · Türkiye eSIM

How it works · Help and contact · Refunds · Terms

Unlimited data eSIM prices

Unlimited data for the whole trip, at one price in US dollars, paid once. No subscription, nothing to top up and no gigabytes to count. Every plan also includes high-speed data every day: Basic plans 500 MB a day, then up to 512 kbps; Enhanced plans 1 GB a day, then up to 1 Mbps.

All destinations

Prices as of 2026-10-01. Each destination's own page carries its current price.