A traveller buying a data plan from a well-known eSIM app rarely thinks about what sits underneath the brand on their phone. But almost none of the well-known consumer travel eSIM names actually operate their own mobile network. They resell connectivity sourced from a wholesale supplier, and the choice of supplier, and the commercial relationship with it, shapes almost everything about how the business runs from there.
The market is growing faster than the headline numbers suggest
According to Juniper Research, travel eSIM revenue reached 1.8 billion US dollars in 2025, an 85% increase from 989 million dollars in 2024. That’s not a market maturing gradually. It’s a market that roughly doubled in a single year, driven by rising eSIM-compatible device penetration, growing traveller familiarity with digital SIM activation, and a widening set of distribution channels that now includes travel booking platforms, fintech apps, and airline loyalty programmes selling connectivity as a side product.
The same research points to something equally relevant for resellers: total eSIM device volume is forecast to grow around 30% in 2026, from 1.2 billion devices in 2025, though that growth is increasingly led by enterprise IoT use cases rather than consumer travel handsets specifically. The takeaway for a wholesale buyer isn’t just “the market is growing.” It’s that the growth is coming from several directions at once, consumer travel, embedded finance products, and IoT, which means the underlying connectivity infrastructure a reseller depends on needs to hold up across a broader and less predictable set of demand patterns than it did even two years ago.
Two ways to source the connectivity underneath your brand
Most resellers sit somewhere on a spectrum between two sourcing models.
At one end is buying through an intermediary or aggregator, a layer that has already negotiated access to multiple underlying networks and sells that access onward, packaged and simplified. This is often the fastest way to get a travel eSIM product to market, because a lot of the underlying complexity, direct carrier relationships, technical integration, roaming agreements, is already handled by the layer above.
At the other end is sourcing connectivity more directly from a mobile network operator, working with a partner that operates its own core network and roaming agreements rather than reselling someone else’s. This route typically involves more technical integration work upfront, but removes a margin layer and gives the reseller more direct influence over rate structure, network access, and the pace at which new capabilities become available.
Neither model is universally correct. A reseller launching quickly, testing a new market, or operating at modest volume often has good reason to start with an aggregator relationship. The calculation tends to shift as volume grows: the same margin layer that made sense at low volume becomes a larger and more visible cost the more traffic runs through it, and control over the underlying network, rather than just access to it, becomes more valuable.
Why some resellers move from aggregator to MNO-direct
The pattern that shows up most consistently among resellers rethinking their supply chain is straightforward: a business that has grown past its original intermediary or aggregator relationship starts wanting better rates, more commercial control and margin, and a platform that lets it run its own customer-specific promotions rather than working within someone else’s packaged tiers.
That last point is easy to underestimate. A reseller operating through an aggregator is often constrained not just on price but on flexibility, unable to launch a market-specific promotion, adjust a pricing tier for a particular customer segment, or move quickly on a new plan structure, because those decisions sit with the layer above them. Moving closer to the network operator that actually owns the infrastructure tends to remove that constraint, alongside the commercial upside.
This also tends to coincide with resellers wanting to launch or strengthen their own B2B or B2B2X proposition, not just resell to consumers. A platform and API layer that supports self-serve SIM-estate management, rather than requiring every change to go through a supplier’s support queue, becomes a genuine requirement rather than a nice-to-have once a reseller is trying to build something of its own on top of the connectivity.
What to look for underneath a wholesale relationship
Whichever model a reseller chooses, a small set of questions tends to separate a good long-term wholesale relationship from one that becomes a constraint later.
Does the connectivity partner operate its own network core, or is there another intermediary layer sitting behind them that isn’t visible from the outside? Direct roaming agreements and packet gateway ownership tend to translate into more consistent performance and more room for commercial negotiation than a chain of resold access.
Is eSIM provisioning built on current standards, specifically SGP.22 for consumer devices, with QR-based or app-based activation that doesn’t require a physical logistics chain? Coverage across 180+ countries and 600+ networks is close to table stakes at this point; the differentiator is increasingly in provisioning speed and platform flexibility, not raw network count.
Can the reseller manage its own SIM estate, customer-specific promotions, and usage rules through a platform and API, or does every change require going back to the supplier? This becomes more important, not less, as a reseller’s own downstream business grows.
And is billing and usage data structured in a way that integrates cleanly with the reseller’s own operations, rather than requiring manual reconciliation as volume scales?
The bigger picture
The concentration of the underlying wholesale market, and the pace at which travel eSIM demand is growing, both point in the same direction: the businesses that will scale comfortably over the next few years are the ones that treat their connectivity sourcing as a strategic decision now, rather than a vendor choice made once and left alone. As OV Travel’s own wholesale, B2B, and B2B2X proposition develops, this is exactly the sourcing conversation we expect to keep having with partners evaluating a move toward MNO-direct connectivity.
FAQs
What is the difference between travel eSIM wholesale and a consumer travel eSIM brand? The consumer brand is the storefront a traveller buys from. Wholesale is the underlying network connectivity that the brand’s product is built on, typically sourced from a mobile network operator or an intermediary reselling access to one.
Why would a reseller move from an aggregator to an MNO-direct relationship? The most common driver is outgrowing the constraints of a packaged intermediary relationship: wanting better rates, more commercial control and margin, and platform access that supports running customer-specific promotions rather than being limited to a supplier’s existing tiers.
How fast is the travel eSIM market actually growing? According to Juniper Research, travel eSIM revenue grew 85% in 2025 to reach 1.8 billion US dollars, up from 989 million dollars in 2024.
What should a reseller look for in a wholesale connectivity partner? Direct network ownership rather than another resold layer, current-standard eSIM provisioning (SGP.22), self-serve platform and API access for managing a SIM estate and promotions, and billing data structured to integrate with the reseller’s own operations.
