The transition toward eSIM-only smartphones has several implications for mobile operators:

New smartphone categories are increasingly being designed without physical SIM trays.
Removing the physical SIM can free valuable internal space for battery capacity and other device components.
Without a physical SIM fallback, activation, device migration and subscription transfer become entirely digital experiences.
Supporting eSIM is therefore only the starting point. Operators increasingly need to coordinate Remote SIM Provisioning, entitlement, digital onboarding, activation, subscription transfer and customer support.
The objective is to make the complexity behind mobile connectivity increasingly invisible to the end user.

The transition from physical SIM to eSIM has been developing for years, but recent developments in the smartphone market suggest the industry is entering a new phase.

In 2022, Apple introduced iPhone models without a physical SIM tray in the United States. The approach continued over subsequent generations before expanding in 2025 to additional markets including Canada, Japan, Mexico and several countries in the Middle East.

With Apple’s 2026 generation, that direction has become even clearer.

The eSIM-only configuration continues with iPhone 18 Pro and iPhone 18 Pro Max across markets that had already transitioned away from the physical SIM tray.

More significantly, Apple has introduced another entirely new form factor, iPhone Duo, designed from day one as an eSIM-only device worldwide.

This evolution suggests that eSIM is no longer simply replacing a physical SIM card. It is increasingly becoming part of how new devices themselves are designed.

Space inside a smartphone is extremely valuable.

Removing the physical SIM tray gives device manufacturers additional flexibility to optimize internal architecture — and Apple is now explicitly connecting eSIM-only design with this benefit.

For the eSIM-only versions of iPhone 18 Pro and iPhone 18 Pro Max, Apple states that the space formerly occupied by the physical SIM is used for a larger battery, providing two additional hours of video playback.

The relationship is even more explicit with iPhone Duo. Apple describes the device as having an eSIM-only design worldwide that saves internal space to maximize battery capacity.

This represents an important evolution in the role of eSIM.

What began primarily as a way to digitize mobile subscription provisioning is increasingly becoming an enabler for device design itself. This becomes particularly relevant as manufacturers explore thinner smartphones, foldable devices and other form factors where internal space is at a premium.

For device manufacturers, eliminating the physical SIM tray can therefore provide benefits beyond connectivity.

For mobile operators, however, it creates a different challenge.

The physical SIM has traditionally provided customers with a simple and familiar fallback.

When changing devices, a customer could remove the SIM card from one phone, insert it into another and reconnect to the mobile network.

An eSIM-only device changes that dynamic.

When there is no physical SIM to move, connectivity depends entirely on the digital experience. Customers do not need — or want — to understand the infrastructure operating behind that experience. They simply expect their mobile subscription to follow them.

This means activation, device migration and subscription transfer need to become increasingly intuitive and reliable.

Remote SIM Provisioning (RSP) provides the standardized infrastructure that enables eSIM profiles to be securely prepared, downloaded, installed and managed digitally. For consumer devices, the GSMA consumer eSIM architecture includes components such as the SM-DP+ (Subscription Manager Data Preparation Plus), which securely prepares and delivers eSIM profiles to devices.

But provisioning the profile is only one part of the experience.

As eSIM adoption expands, the question for operators is increasingly moving from:

“Do we support eSIM?”

to:

“How effectively can we manage the complete eSIM experience?”

A successful digital connectivity journey can involve multiple systems and processes: identifying the device, validating the subscriber and subscription, determining service eligibility, provisioning the appropriate profile, activating services, transferring subscriptions between devices and providing operational visibility when something does not work as expected.

This is where Remote SIM Provisioning, entitlement, digital onboarding and eSIM orchestration increasingly need to work together.

An Entitlement Server, for example, enables an operator to determine whether a subscriber and device are eligible to access specific services and capabilities.

eSIM orchestration goes a step further by coordinating different components of the digital connectivity journey across provisioning infrastructure, entitlement, operator backend systems and digital customer channels.

Operational visibility is equally important. When an activation or transfer fails, operators need to understand what happened across the journey, identify where the failure occurred and support the customer without navigating multiple disconnected systems.

The objective is ultimately simple:

Make the complexity of eSIM infrastructure invisible to the customer.

The continued expansion of eSIM-only devices is therefore about more than replacing a removable card with a digital profile.

It represents a broader transition toward software-driven connectivity.

As devices increasingly rely on digital activation from the moment they are switched on, operators need infrastructure capable of supporting and coordinating the complete connectivity journey — from onboarding and entitlement through provisioning, activation, subscription transfer and ongoing support.

Valid supports this evolution through an integrated portfolio of Trusted Connectivity capabilities.

Our Remote SIM Provisioning solutions enable operators to securely manage and deliver eSIM subscriptions, while our entitlement and orchestration capabilities help coordinate digital activation journeys across devices, provisioning platforms, operator systems and customer channels.

The goal is not simply to make eSIM available.

It is to make connectivity seamless, scalable and increasingly invisible to the end user.

As physical SIM trays continue disappearing from new devices — and entirely new device categories are designed around eSIM from day one — this end-to-end approach will become increasingly important for mobile operators preparing for the next generation of connected experiences.

What is an eSIM?

An eSIM is a digital SIM capability built into a device that enables users to activate and manage mobile subscriptions without inserting or replacing a removable physical SIM card. Mobile subscriptions can instead be provisioned digitally using Remote SIM Provisioning.

What is Remote SIM Provisioning?

Remote SIM Provisioning (RSP) is the standardized technology and infrastructure used to securely provision and manage eSIM profiles remotely. In the GSMA consumer eSIM architecture, an SM-DP+ securely prepares and delivers eSIM profiles to compatible devices.

What is an SM-DP+?

SM-DP+ stands for Subscription Manager Data Preparation Plus. It is a core component of the GSMA consumer eSIM architecture responsible for securely preparing, storing and delivering eSIM profiles to consumer devices.

What is an Entitlement Server?

An Entitlement Server enables mobile operators to determine whether a subscriber, subscription and device are eligible to activate or use specific network services. Entitlement can form part of a broader digital activation journey alongside device detection, authentication, provisioning and service activation.

What is eSIM orchestration?

eSIM orchestration coordinates the systems and processes involved in a digital connectivity journey. Depending on the use case, this can include device identification, entitlement, Remote SIM Provisioning, onboarding, activation, subscription transfer, operator backend integration and operational support.

Why are smartphone manufacturers removing physical SIM trays?

One advantage is the ability to reclaim internal device space. Apple, for example, has explicitly linked its eSIM-only designs to additional space for battery capacity. Removing the physical SIM can also provide manufacturers with greater flexibility when designing thinner devices, foldables and other new form factors.

Does the growth of eSIM-only smartphones mean physical SIM cards are disappearing immediately?

No. Physical SIM cards will continue connecting large numbers of subscribers around the world, and the pace of eSIM adoption will vary by market, operator and device ecosystem. However, the growing number of eSIM-only devices means operators increasingly need to ensure that digital activation and subscription-management journeys can operate without relying on a physical SIM fallback.

The industry’s conversation is shifting from simply supporting eSIM toward managing the complete digital connectivity experience.

As eSIM-only devices become more common, seamless provisioning alone will not be enough. Entitlement, onboarding, activation, subscription transfer, orchestration and operational visibility increasingly need to work together.

For mobile operators, preparing for an eSIM-first future therefore means thinking beyond the profile itself — and designing the entire connectivity journey around the customer.

Explore Valid’s Trusted Connectivity solutions for Remote SIM Provisioning, eSIM orchestration and Entitlement.