Best eSIM for Brits Moving to the USA (2026 Guide)

Moving from the UK to America involves a long checklist of things to organise before you leave. Between visas, banking, healthcare and finding somewhere to live, it’s easy to overlook one of the simplest things you’ll need when you arrive: a reliable way to get online.

The last thing you want after a long flight is to land in the USA without internet access. You may need directions, access to your email, ride-sharing apps, banking apps, accommodation details and a way to contact family, friends or your employer.

That’s why I think setting up your mobile data before you fly is one of the easiest ways to make your arrival less stressful.

For many people, an eSIM can be a convenient option because there is no physical SIM card to collect or install after landing.

📱 What Is an eSIM?

An eSIM is a digital SIM profile built into your phone. Instead of inserting a physical SIM card, you download a mobile plan and install it electronically.

Many recent smartphones support eSIM technology, including modern iPhones, Samsung Galaxy phones and Google Pixel devices.

Compatibility varies by phone model and region, so always check your exact device before purchasing an eSIM.

Your phone will also generally need to be carrier-unlocked to use an eSIM from another provider. ICY SIM specifically says its eSIMs require a compatible, unlocked device.

🇺🇸 Why You Want Mobile Data Before Landing in America

When you’re moving to the USA, there are countless situations where you’ll want internet access immediately.

You may need to:

Having data ready when you arrive means you don’t have to make finding Wi-Fi your first job in America.

For me, that’s one of the biggest advantages of arranging an eSIM before travelling.

📡 Why Not Just Use UK Roaming?

You might not need an eSIM if your UK mobile plan already includes US roaming that works for you.

Before buying anything, check your current provider’s US roaming terms.

Different UK networks and plans have different arrangements. Some include roaming, while others may charge a daily fee or require a roaming pass. The cost can also depend on the specific plan you have.

So rather than automatically assuming an eSIM is cheaper, I’d compare:

Your current UK roaming cost

versus

The cost of a USA eSIM for the amount of data you expect to use.

For someone moving permanently, an eSIM can still be useful as a temporary data solution while you get settled, particularly if you don’t yet have a US mobile plan.

⭐ Why I Chose ICY SIM to Feature

ICY SIM is one of the eSIM providers I feature because it offers prepaid data plans for the USA, can be purchased online and is delivered digitally rather than through a physical SIM card.

You can arrange the eSIM before travelling and install it while you still have a reliable internet connection.

ICY SIM currently says its eSIM plans are primarily data-only, unless a particular plan states otherwise. That makes them useful for getting online, but you should not automatically assume an eSIM includes a US phone number, traditional voice calls or SMS.

I also have an affiliate relationship with ICY SIM, so I may earn a commission if you purchase through my link, at no additional cost to you.

What I Like About ICY SIM

👉 Check ICY SIM’s current USA eSIM plans

📲 How to Set Up an ICY SIM eSIM

The process is fairly straightforward.

1. Check your phone

Make sure your phone supports eSIM and is carrier-unlocked.

2. Choose your USA eSIM plan

Select the plan that suits the amount of data and length of time you need.

3. Purchase your plan

Your eSIM is delivered electronically after purchase rather than being posted to you. ICY SIM says the eSIM appears in the app and is also associated with your order details.

4. Install the eSIM

You’ll need an internet connection during installation, so I’d do this while you still have reliable Wi-Fi or mobile data.

5. Keep your UK SIM available

If you want to continue using your existing UK number, you may be able to keep your physical SIM or primary eSIM active alongside the travel eSIM, depending on your phone.

6. Switch your mobile data when you arrive

At your destination, select the ICY SIM line for mobile data and follow the activation instructions for your phone.

ICY SIM says its plans activate automatically when you arrive at the destination, with the exact setup depending on your device.

👉 Get your USA eSIM from ICY SIM (affiliate link)

✈️ My eSIM Checklist Before Flying to America

Before leaving the UK, I’d make sure I had checked all of these:

☐ My phone supports eSIM
☐ My phone is carrier-unlocked
☐ I’ve chosen the right USA plan
☐ I’ve purchased the eSIM
☐ I’ve installed the eSIM while I have reliable Wi-Fi
☐ I know which line my phone will use for mobile data
☐ I’ve kept my UK SIM available if I want to keep my UK number
☐ I’ve checked my UK provider’s roaming settings
☐ I’ve saved my eSIM account and support details
☐ I know how to switch mobile data between my UK and US lines

Doing this before the flight can save a lot of stress when you land.

🇬🇧 Can I Keep My UK Number?

Usually, yes — provided your phone and UK plan support the setup you’re trying to use.

Many compatible phones can use a physical SIM and an eSIM at the same time. That means you may be able to keep your UK line available while using the eSIM for US mobile data.

ICY SIM specifically says compatible devices can use a physical SIM and eSIM simultaneously, allowing you to choose which line handles data.

There is one important thing to remember:

Keeping your UK SIM active doesn’t necessarily mean using it is free.

Calls, texts and mobile data on your UK line may still be subject to your UK provider’s roaming terms.

So I’d make sure your phone is set to use the appropriate line for mobile data.

📱 Will My Phone Work in America?

Most recent eSIM-compatible smartphones can work with an appropriate US eSIM, but compatibility varies by:

ICY SIM currently lists many modern iPhones, Samsung Galaxy phones and Google Pixel devices among its compatible devices, but I’d still recommend checking your exact model before purchasing.

If your phone is carrier-locked, you may need to contact your UK provider before you can use another eSIM.

🤔 Is an eSIM Better Than Buying a SIM Card in America?

For some new arrivals, yes — mainly because of convenience.

An eSIM lets you arrange your data connection before travelling, so you don’t necessarily need to find a mobile phone shop immediately after arriving.

But it isn’t automatically the best choice for everyone.

Your decision depends on:

For a permanent move, I would think of an eSIM as potentially being the easiest way to get connected while you sort out your longer-term US phone service.

📊 How Much Data Do You Need?

This really depends on how you’ll use your phone.

If you’re moving to America, you may use mobile data for:

If you’ll have reliable Wi-Fi at home, you may not need a huge mobile-data allowance.

If you’ll be out and about most of the day, using maps, video calls and other data-heavy services, you may want a larger plan.

I’d think about your actual usage rather than automatically buying the biggest plan available.

💡 Does ICY SIM Give You a US Phone Number?

Don’t assume it does.

ICY SIM’s current information describes its travel eSIMs as data plans, and its FAQ explains that the eSIM is used for data while your primary phone number can remain active on compatible dual-SIM devices.

That means you should think of an ICY SIM eSIM primarily as a way to get mobile data.

If you are moving permanently and need a US phone number for things such as employers, landlords, banks or other services, you’ll want to consider a separate US mobile service as well.

🕒 Should I Install My eSIM Before I Leave the UK?

Yes — I’d generally install it before travelling, while you still have reliable Wi-Fi.

ICY SIM says an internet connection is required during installation. Its current guidance also recommends installing before departure and then enabling data roaming when you arrive.

One important detail: installation and activation aren’t necessarily the same thing.

You can have the eSIM installed and ready without necessarily using the plan immediately.

Follow the instructions provided with your specific plan and device.

🔐 Is ICY SIM Safe?

ICY SIM is operated by Verios Group Limited, and its current privacy policy says the company is based in Hong Kong. The policy states that customer information is used for service delivery, payments, support, fraud prevention and related purposes, and says the company does not sell personal data to third parties.

ICY SIM also says payment processing is handled by PayerMax and that it does not store customers’ raw card details.

As with any online service, I’d still recommend checking the current terms, privacy policy and refund policy before purchasing.

💷 What Should You Check Before Buying an eSIM?

Rather than simply looking for the cheapest plan, I’d compare:

1. Phone compatibility

Will your exact phone work?

2. Carrier lock

Is your phone unlocked?

3. Data allowance

How much data will you realistically use?

4. Plan length

How long will the plan remain active?

5. Network coverage

Which network or networks does the eSIM use in the USA?

6. Data-only vs phone service

Do you need mobile data only, or do you need a US phone number, calls and SMS too?

7. Activation

Can you install it before travelling, and when does the plan actually start?

8. Support and refunds

What happens if something goes wrong?

These details matter much more than simply finding the lowest headline price.

🇺🇸 Best eSIM for Brits Moving to the USA: My Take

For someone moving from the UK to America, I wouldn’t automatically say that one eSIM is the best choice for absolutely everyone.

I’d compare your current UK roaming option with the available US eSIM plans based on:

price + data + coverage + activation + whether you need a US number

ICY SIM is an option I’d consider if your main priority is getting mobile data without having to visit a US mobile shop immediately after landing.

I also like the fact that the eSIM can be arranged digitally before travel.

But remember that its current travel eSIM offering is primarily data-focused, so it isn’t necessarily a complete replacement for the US mobile service you’ll eventually want as a permanent resident.

💸 Ready to Check ICY SIM’s USA Plans?

If you’re preparing to move from the UK to America, check the current USA eSIM plans before you travel.

You can compare the available options for your trip and choose a data allowance that suits your needs.

👉 Check ICY SIM’s Current USA eSIM Plans

This is an affiliate link. I may earn a commission if you purchase through this link, at no additional cost to you.

❓ Frequently Asked Questions

What is the best eSIM for Brits moving to the USA?

There isn’t one eSIM that is best for everyone.

Compare the price, data allowance, coverage, activation process and whether you need a phone number as well as mobile data.

ICY SIM is one option worth considering, particularly if you want to arrange your data connection before leaving the UK.

Can I use an eSIM and my UK SIM at the same time?

Many compatible dual-SIM phones allow you to use a physical SIM and eSIM together.

ICY SIM says compatible devices can run both simultaneously and let you choose which line handles mobile data.

Do I need an unlocked phone for an eSIM?

Generally, yes. Your phone needs to be compatible and carrier-unlocked to use an eSIM from another provider.

ICY SIM specifically states that locked devices cannot use its eSIMs.

Can I keep my UK number when using an eSIM?

You may be able to keep your UK number active on your existing SIM while using the eSIM for data, depending on your phone and UK mobile plan.

Just remember that your UK provider’s roaming charges may still apply when you use that line.

Will an eSIM give me a US phone number?

Not necessarily.

ICY SIM’s current travel plans are primarily data-based, so don’t assume you will receive a US number, voice service or SMS.

Should I buy an eSIM before travelling to America?

I’d recommend setting it up before travelling if you’re going to use one.

That way, you can install it while you have reliable internet access and have your mobile-data setup ready for arrival. ICY SIM says an internet connection is required during installation.

How much data do I need for moving to America?

That depends on how much you’ll use maps, video calls, social media, streaming and other mobile-data services.

If you’ll have Wi-Fi at home, you may need less than you think.

Is an eSIM better than UK roaming?

Not automatically.

Check what your UK mobile plan already includes and compare the total cost with the eSIM plan you are considering.

Can I use an eSIM permanently in America?

Some eSIM services are designed primarily for travel or temporary data use.

For a permanent move, you may eventually want a US mobile plan with a US phone number and longer-term service.

🇬🇧➡️🇺🇸 More Guides for Brits Moving to America

Planning your move across the Atlantic? These guides can help with some of the other big practical decisions.

💷 Moving Your Money From the UK to the USA

Before transferring your savings overseas, compare Wise and traditional banks and look at the exchange rate, fees and final amount received.

👉 Read: Best Ways to Transfer Money from the UK to the USA

🏦 Opening a US Bank Account

Your US banking setup is another important part of getting settled after you arrive.

👉 Read: How to Open a US Bank Account as a Non-Resident

💳 Starting Your US Credit History

Your UK credit history generally doesn’t simply become your US credit history, so understanding how to start building credit can be important.

👉 Read: How to Start Building Credit in the US

📋 Your UK → USA Moving Checklist

Work through the practical steps of your move with my complete UK to USA moving checklist and printable planner.

👉 Read: UK to USA Moving Checklist 2026

🇬🇧➡️🇺🇸 Final Thoughts

Moving to America involves enough admin without worrying about how you’re going to get online when you land.

For me, having mobile data arranged before the flight is one of those small things that can make the first day considerably easier.

You can use your phone for directions, ride-sharing, banking, messages, emails and all the other little things you suddenly need when you’re in a new country.

Before buying an eSIM, check your existing UK roaming plan, make sure your phone is unlocked and compare the data, coverage and cost of the available options.

And if you’re considering ICY SIM, check the current USA plan details before purchasing, because pricing, availability and plan terms can change.

For a temporary data connection while you’re getting settled, an eSIM can be a very convenient part of your UK→USA move.

💰 Affiliate Disclosure

Some links in this article are affiliate links, including links to ICY SIM. This means I may earn a small commission if you purchase through my link, at no additional cost to you.

I only recommend products and services that I believe may be useful to Brits moving from the UK to the USA.

Tagged , , , , , ,