It compares plans from more than 130 providers across 220+ destinations, with prices checked daily and no markup, so visitors can review options and shop directly with providers. The site offers destination and provider comparisons, alongside filters for trip length, data allowance and plan type. Travelers can browse options ranging from short-stay and one-day plans to long-term, unlimited, pay-as-you-go and global packages covering 50 or more countries.

eSIMKart also highlights popular destinations, seasonal travel suggestions and recent price changes, helping visitors assess when to book and compare costs. Its provider listings include brands such as Yesim, BNESIM, AirPlans and Global YO, with verification details and available discount codes. A dedicated coupons section features promotional offers, while travel guides provide further information about eSIM deals. For users unsure which plan suits their trip, the site includes a plan-finding tool. eSIMKart functions as a comparison and discovery service rather than presenting itself as the provider of the listed connectivity plans.