An eSIM is a digital SIM that the traveler installs from a QR code or a link. A physical SIM is a card that goes in the SIM slot of the phone. Both give the traveler local data on arrival. They differ in where you sell them, what you keep in stock, and which phones they work in.
RoamWorks sells both formats for the same destinations: the physical SIM as a RoamWorks SIM pack, and the eSIM by voucher, through the API, or at a QR stand. This guide helps you choose which one to lead with.
eSIM vs physical SIM at a glance
| Feature | SIM pack (physical SIM) | eSIM |
|---|---|---|
| What it is | A SIM card in a sealed pack | A digital plan from a QR code or a link |
| Phone needs | Unlocked, with a SIM slot | Unlocked, supports eSIM |
| Where it sells | At a desk, or in group packs | Online, by voucher at a desk, or at a QR stand |
| Stock | Packs by destination | None |
| Install | Put the SIM in the phone | Scan the QR code or tap the link, over Wi-Fi or data |
| Home SIM | Swapped out on a single-SIM phone | Stays in the phone |
| Extra data | A new pack | A new eSIM |
Is an eSIM better than a physical SIM?
Neither format fits every traveler. An eSIM needs no stock, sells online or by voucher at a desk, and keeps the home SIM in the phone. A SIM pack works in phones without eSIM support, and staff can hand it over at a desk.
The phone decides first. Then the place where you meet the traveler decides the format. A hotel desk with a guest who has an unlocked phone can issue an eSIM voucher. The same desk needs a small stock of SIM packs for a phone with no eSIM support. An online booking flow can sell an eSIM without a counter, but it must check the phone before payment.
Check the phone first
Every sale starts with the phone. Both formats need an unlocked phone. A SIM pack also needs a SIM slot. An eSIM needs a phone that supports eSIM.
Ask before payment. A short check at the desk saves a support case later.
What does an unlocked phone mean?
An unlocked phone accepts a SIM or an eSIM from any network. A locked phone works only with the carrier that sold it. A phone bought on a contract or a payment plan can be locked to that carrier.
The traveler can check the lock status in the phone settings, or ask the carrier that sold the phone. Do not assume that a phone is unlocked because it is new.
How to check if a phone supports eSIM
- On iPhone, open Settings, then Cellular, then Add eSIM. If the option is there, the phone supports eSIM. The Apple Support guide covers the exact steps.
- On Android, open Settings, then Network and internet, then SIMs, and look for Add eSIM or Download a SIM. The menu name changes by phone maker.
- A phone bought in mainland China can have no eSIM support. A phone bought in another market can have eSIM support but no physical SIM slot.
When the phone does not support eSIM, offer a SIM pack. When the phone supports eSIM but has no SIM slot, offer an eSIM. When the phone supports both, the traveler chooses.
Dual SIM and the home line
Most eSIM phones keep the home SIM in place. The traveler adds the travel eSIM as a second line and chooses it for mobile data. Calls and messages stay on the home line. This is the main reason a traveler chooses an eSIM.
A phone with two physical SIM slots can also take a SIM pack and keep the home SIM. The traveler swaps the data line and keeps the home line in the other slot.
Some phones let the traveler move an eSIM from an old phone to a new phone. The steps depend on the phone and the operating system. Do not promise a transfer at the desk. Check the phone and use the install flow that the phone supports.
Activation, install, and expiry
A SIM pack starts when the traveler puts it in the phone. The pack has a last date to activate. The traveler can keep the sealed pack until the trip.
An eSIM starts when the traveler installs it and connects to a network. Install it before departure on Wi-Fi, or at the desk over the site Wi-Fi. The plan page shows the last date to install and the validity in days.
A stay longer than the plan period needs a new eSIM. The same eSIM cannot get more data today. The traveler can get as many eSIMs as the trip needs, and each further 30 days gets a new eSIM. Do not use a refill model. A new eSIM is the product.
When a SIM pack fits
- The phone has no eSIM support.
- The phone is locked, and the traveler cannot unlock it before the trip.
- The traveler wants a physical product to hold and keep.
- The desk has staff and a small stock by destination.
- The trip is a group or a team, and the packs can be labelled before departure.
When an eSIM fits
- The phone supports eSIM and is unlocked.
- The traveler books online and wants the plan before departure.
- The desk has no stock or no space for stock.
- The traveler wants to keep the home SIM in the phone.
- The partner wants a digital delivery with no pack to lose or return.
A simple decision rule
- Check the phone. If it is locked, do not sell either format.
- If it has no eSIM support, offer a SIM pack.
- If it supports eSIM, offer an eSIM.
- If it supports both, offer both and let the traveler choose.
Offer both at the desk
Many desks keep a small stock of SIM packs and issue eSIM vouchers too. Staff check the phone. If it has a SIM slot and the traveler wants a card, they hand over a pack. If the traveler wants an eSIM, they send a one-time voucher by email or to the account.
The SIM packs page shows the pack and its install steps. The digital vouchers page shows the eSIM flow. The QR stands page covers a site with no staff.
Plan the support path
Both formats need a clear first answer. Define who helps the traveler at the desk, who checks the order, and who handles a refund or an unsold pack. The partner agreement sets the terms for stock, returns, and support.
A failed eSIM install is a product event. Give the traveler a support route that does not depend on the person who sold the plan. A failed pack is simpler: replace it if it is sealed and unused, and follow the stock rule.
What to measure
- Format chosen by phone type.
- Failed installs by format.
- Refunds and unused packs.
- Time to hand over a pack or issue a voucher.
- Repeat purchase on the next trip.
These numbers show which format fits your travelers. They also show where the desk needs more stock or a better install guide.
Sources and checked
- Apple Support, About eSIM on iPhone, checked 27 October 2026.
- European Commission, Roaming abroad, checked 27 October 2026.
- RoamWorks coverage and plan rules, checked 27 October 2026.
Talk to us about the format mix for your desk or booking flow. The coverage page shows the destinations, and the contact page starts a fit call.