What is an eSIM?

eSIM stands for “embedded SIM”. It’s a digital SIM card that’s built directly into your device, whether that’s a smartphone or a smartwatch. Just like a traditional physical SIM, an eSIM holds the essential data that connects your number to your network provider and manages your specific plan and features.

Info! There is generally no extra charge to choose an eSIM over a physical one, and most Irish providers allow you to swap from a physical SIM to an eSIM for free.

Unlike a physical SIM, there’s no need to wait for the postman. Since the hardware is already inside your phone, you simply need a QR code from your provider to get up and running. While most Irish networks now offer eSIM as an alternative, it’s worth noting that it might not be available for every single type of plan just yet.

Pros and cons of eSIM

  • Instant activation
  • Dual SIM support
  • Eco-friendly

  • Harder to transfer
  • Limited compatibility

What is the difference between a local eSIM and a Travel eSIM?

When looking at eSIMs, you’ll likely come across two main types: Local eSIMs and Travel eSIMs.

  • Local eSIM: This is what you get from an Irish provider (like Vodafone, Three, or Eir). It gives you a local Irish phone number, allows you to make standard calls and texts, and usually involves a monthly bill or a prepay top-up.
  • Travel eSIM: These are data-only profiles from global providers (like Airalo or Holafly). They are designed for short trips abroad to avoid roaming charges. You won’t get a local number to make “regular” calls, but you’ll have plenty of data for WhatsApp, Maps, and browsing.

Is eSIM available for both SIM only and prepay deals?

Yes, eSIMs are available for both SIM only and prepay deals, though they are currently much more common on SIM only contracts. Even if a provider offers eSIMs, they might restrict them to their bill-pay customers. If you’re a prepay user, it’s always best to double-check with your provider’s support team or website before making the jump.

On our prepay eSIM deals page, you can find a deep dive into how prepay eSIMs work and which Irish networks are currently supporting them.

How to get an eSIM

  1. Check your device: Most flagship phones from the last few years support eSIM, but it’s not universal. Use our search tool at the top of the page to see if your specific model is compatible.
  2. Pick a provider: Ensure the network you choose actually supports eSIM. You should also consider their 5G coverage in your area and whether their SIM only or prepay plans suit your data needs.
  3. Find the best deal: Use our comparison tables to filter by price and data allowance. This ensures you’re getting the best value for your device.
  4. Select eSIM at checkout: When ordering your new plan, you can usually tick a box for “eSIM” instead of “physical SIM”. If you’re an existing customer, you can usually request a “SIM swap” to eSIM via your “MyAccount” section on the provider’s website.
  5. Scan and go: Once your order is processed, the provider will email you a QR code. Simply scan this with your phone to activate your new profile instantly.

Which is the cheapest eSIM?

Clear Mobile Unlimited is the cheapest bill pay eSIM deal right now (checked on 29/09/2026). The cost is €0.00/month for 1 months, then €12.99/month when you sign a 0-month contract.

Get the deal at Clear Mobile

Eir Extra is the cheapest prepay eSIM deal right now (checked on 29/09/2026). Top up from €0.00/month for 1 months, then €20.00/month.

Get the deal at Eir

How to activate an eSIM on your mobile

Activating is as simple as scanning a QR code, though the menu names might vary slightly depending on your handset. Make sure you are connected to a stable Wi-Fi network before you start the activation process.

Activate eSIM on iPhone

  1. Open Settings.
  2. Tap Mobile Service (or Mobile Data).
  3. Tap Add eSIM.
  4. Select Use QR Code and scan the code provided by your network.
  5. Follow the prompts and restart your iPhone to finish the setup.

Activate eSIM on Samsung Galaxy

  1. Go to Settings.
  2. Tap Connections > SIM manager.
  3. Select Add eSIM.
  4. Scan the QR code and follow the on-screen instructions.
  5. Restart your phone to ensure the network registers correctly.

Using eSIM with smartwatches

Many modern smartwatches (like the Apple Watch Cellular or Samsung Galaxy Watch) now support eSIM. However, in Ireland, this usually requires a specific add-on service (sometimes called OneNumber or a Multi-SIM add-on).

This service mirrors your primary bill-pay mobile number onto your watch, sharing your data and minutes. This allows your watch to work as a standalone device – you can go for a run and leave your phone at home while still receiving calls and streaming music.

What you need for a Smartwatch eSIM

  • An eSIM-compatible smartwatch (LTE/Cellular model).
  • A plan with a provider that supports “Number Sharing” (Note: Not all Irish budget networks support this yet).
  • The wearable add-on active on your account.

Frequently asked questions

How do I know if my phone is eSIM compatible?

Most smartphones released after 2019 are eSIM compatible. This includes iPhone 11 and newer, Samsung Galaxy S20 series onwards, and Google Pixel 3 or later. To check yours, go to your phone settings, tap General > About, and look for an EID number. If you see an EID number in your device info, your phone supports eSIM.
Is eSIM better than a physical SIM?

In terms of signal strength, there is no difference. However, an eSIM is more secure as it cannot be physically stolen or removed if your phone is lost. It also allows you to switch between different SIM Only deals much faster without waiting for the post.
Can I have two eSIMs active at the same time?

Yes, most modern smartphones now support “Dual eSIM” or a combination of a physical SIM and an eSIM. However, it is important to understand that most devices operate on Dual SIM Dual Standby (DSDS) technology. This means that while both numbers are “active” and ready to receive calls or texts, you cannot use both simultaneously for active calls. If you are talking on your personal line, any incoming call to your work line will usually go straight to voicemail. Similarly, you must select one SIM at a time to provide your mobile data (5G/4G).
Does it cost anything to switch to an eSIM?

Generally no, most Irish networks provide the digital swap for free.
Can the same QR code be used multiple times?

Usually no. For security, most QR codes are single-use. If you change phones, you’ll need to request a new one from your provider.
How long does it take for the eSIM to activate?

It’s usually near-instant, though it can take up to 2 hours for the network to fully provision the service on your device.