Should I Switch to an eSIM? Pros, Cons, and What UK Users Need to Know

Switching from a physical SIM card to an eSIM may seem like a small tech upgrade, but it can have a big impact on convenience, flexibility, and travel. With many UK networks now supporting eSIM technology, it’s important to understand how it works and whether it’s right for you.

In this guide, we’ll cover what an eSIM is, how it compares to traditional SIM cards, which networks support it, and how it can benefit travellers, remote workers, and everyday users in the UK.

What Is an eSIM?

An eSIM, or "embedded SIM", is a digital SIM card built into your device. Unlike physical SIMs, which you insert into a tray, an eSIM is downloaded and activated through software. This makes switching networks, managing multiple plans, and travelling abroad far more flexible.

Key features of eSIMs:

• No physical card needed — all digital

• You can store multiple plans on a single device

• Easier to switch between providers without waiting for a SIM card

• Useful for dual SIM setups (one personal, one business, or UK + travel)

What Are the Benefits of Switching to an eSIM?

1. Convenience and Instant Setup

With an eSIM, you don’t need to wait for a SIM card in the post. You can download your plan and activate it within minutes using a QR code or mobile app.

2. Perfect for Dual SIM Users

If your phone supports dual SIM, an eSIM allows you to have one digital plan and one physical SIM. This is ideal for separating business and personal numbers or combining UK and overseas plans.

3. Better for Travel

Many eSIM providers offer pay-as-you-go data plans for international destinations. You can activate a local eSIM before you fly, often saving significantly on roaming charges.

4. Reduced Risk of Loss or Damage

Since there’s no physical component, you can’t lose or damage the eSIM like a traditional SIM.

Are There Any Drawbacks to eSIMs?

While eSIMs offer many advantages, they’re not without a few limitations:

• Not all phones support eSIMs. You’ll need a compatible model (see below).

• Transferring eSIMs can be tricky. Moving your eSIM to a new phone isn’t as simple as swapping a physical SIM — you may need to contact your provider.

• Limited support from some networks. Not all UK carriers offer full eSIM functionality.

• Can be confusing at first. If you're used to physical SIMs, the setup process may feel unfamiliar.

Which UK Networks Support eSIM?

As of now, most major UK mobile networks offer some level of eSIM support:

• EE – Full eSIM support for phones and smartwatches

• O2 – Supports eSIM for pay monthly plans

• Vodafone – Available on selected phones and Apple Watches

• Three – Supports eSIM on compatible devices and wearables

• Lycamobile, Ubigi, Truphone, and Airalo – Great for travel-focused eSIM plans

Before switching, check with your provider to confirm whether your plan and device are eligible.

Is My Phone Compatible with eSIM?

Most newer smartphones support eSIM, but it’s essential to check your exact model. Generally, the following phones are compatible:

• Apple: iPhone XS and newer

• Samsung: Galaxy S20 and newer, Z Flip, Fold, and Note20 series

• Google: Pixel 3 and newer

• Huawei: Some P and Mate series

• Motorola: Some Edge models

Tip: Go to your phone's settings and search for “eSIM” or “Mobile Plan” to see if the option is available.

eSIM vs Physical SIM: Which Is Better?

eSIM Advantages:

• Digital setup with no need to wait for delivery

• Multiple plans on one device

• Ideal for travel or dual-use

• Harder to lose or damage

Physical SIM Advantages:

• Easily swapped between devices

• Universally supported by all networks and phones

• More straightforward for some users

Best of both worlds? If your phone supports dual SIM, you can use one of each — ideal for keeping your main plan and adding a short-term travel SIM when needed.

Who Should Consider Switching to an eSIM?

Switching to an eSIM may make sense if you:

• Travel regularly and want to avoid roaming charges

• Need to use two numbers (e.g., personal and work)

• Want to switch providers more easily

• Prefer not to wait for a SIM card to arrive in the post

• Use a smartwatch or other wearable device

How Do I Switch to an eSIM?

Switching usually takes just a few steps:

1. Check your phone compatibility. Ensure it supports eSIM.

2. Contact your provider. Request an eSIM activation or QR code.

3. Follow the setup instructions. This is usually done via Settings > Mobile Network > Add eSIM.

4. Activate your new plan. Some providers also support scanning the QR code using their app.

Most UK providers also offer help pages and online chats to guide you through the switch.

A Lesser-Known eSIM Benefit: Security

eSIMs can actually reduce the risk of SIM swap fraud — a scam where criminals transfer your number to a new SIM to access bank accounts. Since eSIM transfers often require additional security verification, it makes this type of fraud more difficult.

FAQs

Is it free to switch to an eSIM?

Most UK networks don’t charge for switching to an eSIM, especially for existing customers. However, always check with your provider.

Can I keep my number when switching to an eSIM?

Yes — your phone number will transfer over to the eSIM just like it would with a traditional SIM swap.

Will switching to an eSIM affect my phone’s performance?

No, your phone will perform the same. eSIMs use the same networks and data speeds as physical SIMs.

What happens if I lose my phone with an eSIM?

Losing your phone doesn’t compromise your number, but you’ll need to contact your provider to deactivate the eSIM remotely and issue a replacement on your new phone.

Can I use multiple eSIMs on the same phone?

Yes — most eSIM-compatible phones allow you to store multiple eSIM profiles, though only one or two can be active at a time depending on the model.

Final Thoughts

Switching to an eSIM can be a smart move — especially if you value flexibility, travel frequently, or need to manage multiple numbers. It streamlines your mobile experience while opening the door to cheaper, more versatile plans.

However, it’s not for everyone. If you’re using an older phone, frequently change devices, or prefer a hands-on approach, sticking with a physical SIM may be more practical for now.

As the UK continues to embrace digital connectivity, eSIMs are quickly becoming the norm. Making the switch today could future-proof your mobile setup — and save you time, hassle, and money in the long run.

Related articles

• How to Switch Mobile Providers and Save Money

• Is 5G Worth Paying Extra For?

• Do You Really Need Mobile Phone Insurance?

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