eSIM vs Physical SIM: Which Is Better, Especially for Travel?

No iPhone sold in the US since 2022 has had a SIM card slot. The iPhone Air doesn’t have one anywhere in the world, and neither does Google’s Pixel 10 in the US. The SIM card isn’t dead yet, but phone makers have made it clear which way things are going.

So is an eSIM actually better? For most people, most of the time, yes, and for travel it’s not close. But there are a few situations where a physical SIM still makes more sense, and a few eSIM catches worth knowing before you rely on one.

This guide compares the two properly, with current roaming prices and phone details as of October 2026.

The short version

	Physical SIM	eSIM
What it is	A removable chip you put in a tray	A chip built into the phone that downloads your plan
Getting a new plan	Get a card from a shop or by post	Scan a QR code or use the carrier’s app, in minutes
Moving to a new phone	Swap the card over	Transfer it in settings, or ask the carrier
Lines on one phone	One per slot	Several stored, usually two active at once
If your phone is stolen	The thief can pop out the SIM	It can’t be removed
For travel	Buy a local SIM after you land	Buy before you go, active when you land
Works on	Almost every phone	Most phones from the last five or six years

What is an eSIM and how does it work?

An eSIM is a SIM that’s built into your phone instead of being a card you insert. Apple describes it as “an industry-standard digital SIM built into your iPhone”.

The chip is the same on every phone. What changes is the profile your carrier downloads to it, which holds the details a SIM card used to carry. To add one, you scan a QR code, type in an activation code, or let the carrier’s app set it up. The phone needs to be on Wi-Fi or another data connection while it downloads.

Because the profile is software, a phone can hold several. An iPhone can store eight or more eSIMs, and iPhone 13 and later can use two at the same time. Google Pixel 7 and later can also run two at once, if the carrier allows it.

The differences that actually matter

Setting up a new plan

A physical SIM means getting a card, from a shop, a kiosk or the post, then finding the little pin to open the tray. An eSIM takes a few minutes from your sofa: buy the plan, scan the code, done. The one requirement is an internet connection while you install it.

Switching to a new phone

This is where physical SIMs used to win, and the gap has closed. On iPhone, eSIM Quick Transfer moves your eSIM to a new iPhone during setup, as long as both phones run iOS 18.4 or later, use the same Apple Account and your carrier supports it. Moving from Android to iPhone needs iOS 26. Pixel phones on Android 12 or later can transfer an eSIM between Pixels in a similar way.

When a transfer fails, you contact your carrier for a new eSIM. With a physical SIM, you’d just have moved the card, so this is the one area where the old way is still simpler.

Keeping two numbers on one phone

With physical SIMs you’re limited by the number of slots, usually one. With eSIMs you can keep a work number and a personal number, or your home line and a travel data plan, and switch between them in settings.

Security

An eSIM can’t be pulled out of a stolen phone and put into another one. The US Federal Communications Commission notes that removable SIMs are sometimes stolen and used in “port-out” scams, and an eSIM removes that route.

It doesn’t remove SIM swap fraud, where a criminal gets into your mobile account and moves your number to their own device. With eSIMs, that can mean generating a new eSIM QR code from your hacked account. The defences are the same either way:

• Set a PIN or passcode on your mobile account.
• Turn on your carrier’s number lock or port-out protection. FCC rules adopted in 2023 require US carriers to offer one free.
• Use an authenticator app instead of text messages for your important accounts where you can.

Battery and signal

We found no credible evidence that an eSIM affects battery life or signal compared with a physical SIM. Signal depends on the network, your phone’s antenna and modem, not on whether the SIM is a card or a chip.

Phone support

Physical SIMs work in nearly every phone. eSIMs need a phone that supports them and, for most uses, one that isn’t locked to a single carrier. Almost every flagship from the last five or six years qualifies, but cheaper phones and older models often don’t. Our guide to eSIM-compatible phones shows how to check yours in about ten seconds.

Which phones are eSIM-only?

• iPhone 14 and later in the US. Apple removed the SIM tray from every US model in September 2022.
• iPhone Air and iPhone Duo, worldwide.
• iPhone 17, 17 Pro, 17 Pro Max, 17e, 18 Pro and 18 Pro Max, in 13 markets: the US, Puerto Rico, the US Virgin Islands, Guam, Canada, Mexico, Japan, Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman. Elsewhere, including the UK and Europe, they still have a SIM tray.
• Google Pixel 10 and Pixel 11 phones (the standard, Pro and Pro XL models), in the US.

Phone makers aren’t alone in this. GSMA Intelligence, the mobile industry body’s research arm, estimates that eSIM made up about 5% of smartphone connections worldwide at the end of 2025 and will pass removable SIMs by 2030. In the US, it’s already around 40%.

eSIM vs physical SIM for travel

Travel is where the difference is biggest. You have three ways to get mobile data abroad.

1. Roam on your home plan

It’s the easiest option and usually the most expensive. In the US, on October 2026 prices:

• AT&T International Day Pass: $12 a day, capped at 10 daily charges per bill period.
• Verizon TravelPass: $12 a day in most countries ($6 in Canada and Mexico), with 5GB of high-speed data per session.
• T-Mobile: its more expensive plans include some high-speed roaming data. Its International Pass costs $10 for a day, $50 for 10 days or $75 for 30 days.

In the UK, Vodafone sells roaming passes from £16 for 8 days.

2. Buy a local physical SIM

The cheapest data per gigabyte, especially for long stays. The trade-off is time. You need to find an airport counter or a phone shop after landing, queue, buy a SIM, and usually register it with your passport, which is required for prepaid SIMs in most countries. Then you need somewhere safe to keep your home SIM for the rest of the trip.

3. Use a travel eSIM

You buy a data plan for your destination before you leave, install it at home on Wi-Fi, and it starts working when you land. You keep your home SIM in the phone the whole time.

Here’s what 10 days in Japan looks like:

Option	Cost for 10 days
AT&T International Day Pass	$120
Verizon TravelPass	$120
T-Mobile 10-day International Pass	$50
SpendCrypto Japan eSIM, 10GB for 30 days	$12.30

The pattern holds on average, too. Juniper Research found roaming cost about $8.57 per gigabyte in 2024, against $5.50 for travel eSIMs.

The best setup: keep your SIM, add an eSIM for data

You don’t have to choose. Most modern phones can run a physical SIM (or your home eSIM) and a travel eSIM side by side. The home line stays on for calls and texts, including the text-message codes your bank sends. The travel eSIM handles data.

On an iPhone:

1. Install the travel eSIM before you leave, while you’re on Wi-Fi.
2. Go to Settings, then Cellular (or Mobile Data in the UK), then Cellular Data, and choose the travel eSIM.
3. Turn Allow Cellular Data Switching off, so your phone doesn’t quietly fall back to your home line.
4. Open your home line’s settings and make sure Data Roaming is off. Turn data roaming on for the travel eSIM.

Apple notes that iMessage and FaceTime keep working on your home number even when the travel eSIM is handling data.

On a Pixel or other Android phone, go to Settings, then Network & internet, then SIMs. Set the travel eSIM as the default for mobile data, turn roaming on for it, and turn roaming off for your home SIM.

One thing to check with your carrier: whether receiving texts on your home line while abroad costs anything. AT&T says texts you receive don’t trigger its daily fee. Other carriers’ rules vary.

The eSIM catches worth knowing

• Install before you travel. Installing needs an internet connection, and the airport Wi-Fi is not the place to find out it doesn’t work.
• Don’t delete it mid-trip. Most travel eSIMs can only be installed once. Apple warns that if you erase an eSIM, you’ll need a new one from the provider. Remove it when you’re home, not before.
• Most travel eSIMs are data only. They don’t come with a local phone number, so you can’t receive calls on them. WhatsApp, iMessage, FaceTime and other internet calling all work normally.
• Your phone has to be unlocked. A phone locked to your home carrier will refuse another provider’s eSIM.

So which is better?

For everyday use at home, either works. If your phone supports it, an eSIM is more convenient, harder to steal and easier to manage alongside a second line.

For travel, an eSIM is better for almost everyone. It’s cheaper than roaming, quicker than hunting down a local SIM, and lets you keep your home number active.

For long stays of several months, a local SIM can work out cheaper per gigabyte, and on an eSIM-capable phone you can often get a local eSIM instead.

For older phones, a physical SIM is the only option.

Getting a travel eSIM with crypto

SpendCrypto sells data eSIMs for 202 destinations, including regional plans for Western Europe and a global eSIM for multi-country trips. You pay with Bitcoin, USDT, USDC or other crypto, check out with just an email address, and get the QR code on your order page as soon as the payment confirms. The install guides for iPhone and Android take a few minutes.

If you’re still choosing, our guide to the best eSIM for international travel compares providers and prices.

Common questions

Is an eSIM better than a physical SIM?

For most people, yes. It’s quicker to set up, can’t be removed from a stolen phone, and lets you run more than one line. For travel, it’s much cheaper than roaming. A physical SIM is still the better choice for older phones that don’t support eSIM.

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

Yes, on most phones that support eSIM. A common setup is your physical SIM for calls and texts and an eSIM for data, especially when travelling.

How do I switch from a physical SIM to an eSIM?

Many carriers let you convert in settings. On iPhone, go to Settings, then Cellular, and look for Convert to eSIM under your line. Pixel 8 and later can convert in Settings, then Network & internet, then SIMs. If you don’t see the option, your carrier can do it. Once converted, the old physical SIM stops working.

Does an eSIM use more battery?

We found no credible evidence that it does. Battery use depends on signal strength and how much you use your phone, not on whether the SIM is physical or embedded.

What happens to my eSIM if I lose my phone?

The eSIM stays in the lost phone, and nobody can remove it and use it in another device. Contact your carrier to suspend the line and get a new eSIM for your replacement phone.

Do travel eSIMs come with a phone number?

Most don’t. They’re data only, which is all you need for maps, messaging apps and internet calls. Keep your home SIM active if you need to receive calls or texts on your usual number.