eSIM vs physical SIM card: a side-by-side comparison

Side-by-side comparison table

What is an eSIM?

An eSIM (embedded SIM) is a chip soldered into your phone at the factory. It works exactly like a traditional SIM card but does not need a physical slot. You download a carrier profile onto the chip by scanning a QR code or tapping a link. The phone activates the plan within minutes.

Modern iPhones (XR and newer), Google Pixels (3 and newer), and Samsung Galaxy phones (S20 and newer) all support eSIM. The iPhone 14 US model and later have no physical SIM slot at all. Apple went eSIM-only.

When a physical SIM still wins

Physical SIMs work in older phones that do not support eSIM. If your phone was made before 2018, it likely has no eSIM capability. Physical SIMs are also available at airport kiosks and convenience stores in most countries, which helps travelers who did not plan ahead.

In a few countries, local physical SIMs come with a local phone number for receiving calls from local contacts. Travel eSIMs are data-only, so they do not provide a local number.

When an eSIM is the better choice

If your phone supports eSIM, the setup is faster and cheaper. You buy it before your flight, install it at home on WiFi, and land with data already working. No language barriers at a shop, no risk of getting an incompatible SIM size, and no losing the tiny plastic card. See what carrier roaming costs without an eSIM.

• You can store multiple eSIMs for different countries on one phone
• Your home carrier SIM stays active for calls and texts
• No physical card to lose, damage, or have stolen
• Install from anywhere. No shop visit required

Dual SIM setup: running physical SIM and eSIM together

Most travelers use a dual SIM setup: their carrier on the physical SIM (or primary eSIM), and a travel eSIM for data. This gives you the best of both. Your home number stays active for calls and texts while the travel eSIM handles all data traffic at local rates.

Here is how to configure dual SIM on each platform:

• iPhone: Go to Settings > Cellular > Cellular Data. Select the travel eSIM as the data line. Your carrier SIM stays default for calls and texts
• Samsung Galaxy: Go to Settings > Connections > SIM manager. Set the travel eSIM as the mobile data SIM. Your physical SIM handles voice
• Google Pixel: Go to Settings > Network & internet > SIMs. Tap the travel eSIM and toggle Mobile data on. Set your carrier SIM for calls

One important step: turn off data roaming on your carrier SIM after setting up dual SIM. If you skip this, your carrier may still route some data through its roaming connection and charge you. See the step-by-step guide to disabling roaming.

Prepaid SIM vs eSIM for travel: a cost and convenience comparison

A prepaid physical SIM card from a local shop and a travel eSIM both give you local data at local rates. The difference is convenience, time, and total cost.

In a few countries, a local prepaid SIM can be cheaper per GB than a travel eSIM. Thailand is one example: a 15-day, 30 GB AIS SIM costs about $10 at the airport. A travel eSIM with the same data costs $15 to $25. The eSIM still wins on convenience (no shop visit, no passport scan, instant activation), and it keeps your home number active.

In countries like Japan, South Korea, and most European destinations, the eSIM is both cheaper and faster than buying a physical SIM. Airport SIM kiosks in Japan charge $25 to $40 for 5 GB, while an eSIM costs $12 to $22.

eSIM security: why carriers and banks prefer eSIM

Physical SIM cards are the weakest link in phone security. SIM-swap attacks, where a criminal convinces your carrier to transfer your number to a new SIM, affected an estimated 68,000 Americans in 2023 (FBI IC3 data). Once a criminal has your number, they can bypass SMS-based two-factor authentication and access your bank accounts, email, and crypto wallets.

An eSIM is harder to steal. It is soldered into the phone and protected by the device's passcode and biometric lock. A criminal cannot walk into a carrier store and request a new eSIM without your phone. T-Mobile, AT&T, and Verizon have all added extra verification steps for eSIM transfers after the wave of SIM-swap fraud in 2022-2023.

For travelers, the physical security matters too. A pickpocket who steals your physical SIM can insert it in another phone and intercept your calls and texts. An eSIM remains locked inside your device.

eSIM-only phones: the future of mobile connectivity

Apple removed the physical SIM tray from US-sold iPhones starting with the iPhone 14 in September 2022. All iPhone 14, 15, and 16 models sold in the United States are eSIM-only. Google followed with the Pixel 9 in 2024, also eSIM-only in the US market. Samsung is expected to ship eSIM-only Galaxy models in selected markets by 2027.

For travelers with eSIM-only phones, the choice is already made. You cannot buy a local physical SIM at an airport kiosk. A travel eSIM is the only option for mobile data abroad (besides carrier roaming). The good news: eSIM-only phones support multiple stored eSIM profiles. An iPhone 15 stores up to 8 eSIM profiles at once, with 2 active simultaneously.

If you plan to travel with an eSIM-only phone, install your travel eSIM at home on WiFi before you fly. You cannot install an eSIM without an internet connection, and airport WiFi is often slow or requires a sign-up. Read our step-by-step eSIM installation guide for iPhone, Samsung, and Pixel instructions.

Cost comparison: eSIM vs physical SIM vs carrier roaming

Here is a side-by-side cost comparison for a 7-day trip to Japan using 5 GB of data:

Japan pricing based on Narita/Haneda airport kiosks and downtown carrier shops. eSIM rates verified June 2026.

The eSIM is cheaper than both carrier roaming and airport SIM kiosks in Japan. It is also the only option that keeps your home phone number active while providing local data. A physical SIM requires swapping cards, which means your home number goes offline until you swap back.

How to get started with an eSIM

1. Confirm your phone supports eSIM (Settings > Cellular on iPhone).
2. Pick an eSIM provider based on your destination and data needs.
3. Purchase a plan and receive a QR code via email.
4. Scan the QR code in your phone's settings to install.
5. Activate the eSIM when you arrive, or set it to activate automatically.

Frequently asked questions

Can I use eSIM and physical SIM at the same time?

Yes. Most modern phones support dual SIM — one physical and one eSIM running simultaneously. Keep your home number on the physical SIM and add a travel eSIM for cheap data abroad.

Is eSIM more secure than a physical SIM?

Yes. An eSIM cannot be physically stolen or swapped without your phone's passcode. This protects against SIM-swap attacks that target physical cards. Saily adds an extra layer with built-in VPN from the NordVPN team.

Which phones support eSIM?

iPhone XR and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer, and most flagship Android phones from 2020 onward. The iPhone 14 in the US is eSIM-only with no physical SIM slot.

Can I transfer an eSIM to a new phone?

Some providers allow eSIM transfers via their app. Others require you to delete and reinstall the profile on the new device. Check with your provider before switching phones mid-trip.

eSIM providers worth comparing

Four providers cover the majority of travel destinations. Each offers a different strength. You can also compare your home carrier's roaming rates to see how much you save, or check how WhatsApp works abroad with an eSIM.

Compare eSIM prices for: Japan · France · Thailand

• Airalo: Best Overall. 200+ countries, plans from $4.50. Compare Airalo
• Holafly: Best Unlimited. 178+ countries, plans from $2.99/day. Compare Holafly
• Saily: Best Privacy. 150+ countries, plans from $3.99. Compare Saily
• Nomad: Best Budget. 112+ countries, plans from $3.50. Compare Nomad