How To Install And Use An eSIM on Samsung Galaxy S23 Series

Wondering how to use an eSIM on your Samsung Galaxy S23? It's easier than you think—and perfect for staying connected while traveling.

Instead of swapping out physical SIM cards, you can instantly connect to local or international data networks, right from your phone. Whether you're hopping between countries or just want the flexibility of dual SIM use, your Samsung S23’s capability is a game-changer for savvy travellers, and we're here to show you just how simple it is to get started.

This article is part of our Androod eSIM series, do also check out our article on how to install an eSIM on Android.

How many eSIMs can the Galaxy S23 Series Support?

You can install multiple eSIM profiles on the Galaxy S23, but only one eSIM can be active at a time. The S23 series supports dual SIM functionality in two ways:

1. Two physical SIM cards, or
2. One physical SIM and one active eSIM

This dual-SIM capability is perfect for travellers. You can keep your primary physical SIM active for calls and texts from home and add a travel eSIM for affordable data abroad.. No more SIM swapping at the airport!

How to install an eSIM in my Galaxy S23 Series Phone?

Installing an eSIM on your Galaxy S23 is easy, and there are three supported methods: using a QR code, activating a pre-assigned plan, or entering details manually.

No matter the method used, do note that your device will need to be connected to the internet (either by Wi-Fi or mobile data network) for the installation to take place.

Option 1: Install a Pre-Assigned eSIM plan

If your device has a pre-assigned plan, it is fairly straightforward to have it installed.

1. Go to Settings > Connections > SIM Card Manager
2. Select ‘Add Mobile Plan’ and wait for it to search for available plans
3. If a pre-assigned plan is available, it will appear. Select the plan and follow the instructions on screen

Option 2: QR Code Installation

Most eSIM providers will provide an installation QR code upon successful purchase.

1. Display your QR code on another screen or print it
2. Go to Settings > Connections > SIM Card Manager
3. Select ‘Add Mobile Plan’
4. Select ‘Scan Carrier QR code’
5. Scan your QR code and follow the setup instructions

Option 3: Manual Input

It is typically not recommended to install an eSIM by manual input. This method is less common and only recommended if the QR method doesn’t work.

1. Display your QR code on another screen or print it
2. Go to Settings > Connections > SIM Card Manager
3. Select ‘Add Mobile Plan’
4. Select ‘Scan carrier QR code’ then select ‘Enter Activation Code’
5. Enter the information provided to you by your service provider.

Managing eSIM on Your Galaxy S23

Switching between your SIM and eSIM on the Samsung Galaxy S23 is simple one both are activated in your device.Follow these steps to manage your SIMs:

1. Go to Settings > Connections > SIM Card Manager
2. Enable both your physical SIM card and the eSIM profile you wish to use.

Once activated, you can assign each SIM to handle specific services on your phone—namely:

• Calls
• Messages (SMS)
• Mobile Data

For example, to assign eSIM1 as your data SIM:

1. Tap Mobile data
2. Choose eSIM1

You can repeat the process for calls and text messages, selecting your preferred SIM or eSIM profile for each function.

SIM Preferences

Your Samsung Galaxy S23 allows you to customise which SIM handles specific tasks:

1. Go to SIM card manager
2. Under Preferred SIMs, set your defaults for Mobile Data, Calls and Messages

You can also choose “Ask always” if you prefer selecting a SIM manually each time you place a call or send a text.

How to Remove or Switch eSIM Profiles

The Galaxy S23 supports multiple eSIM profiles, though only one can be active at a time alongside a physical SIM.

To switch profiles: Go to SIM card manager, toggle off the current eSIM and enable a different one.

To add or remove eSIMs:

1. Go to Settings > Connections > SIM card manager > Add eSIM
2. Follow your carrier’s instructions (usually via QR code or activation code.

To switch or deactivate a profile, simply toggle the eSIM off in the SIM card manager.

Troubleshooting eSIM Setup Issues

Setting up the eSIM on your Galaxy S23 is typically straightforward, but you might occasionally run into issues. Here’s how to resolve the most common problems:

Network Error

If your eSIM shows “No Service”:

• Ensure the eSIM is selected for mobile data under Settings > Connections > SIM card manager.
• Confirm that Data Roaming is enabled for your travel eSIM.
• Confirm the eSIM has been activated - some activate automatically, others require manual steps via carrier app or website.

If you’re using a Nomad eSIM, you can check the activation status directly in the Nomad app or via the Nomad website under Manage eSIM.

Activation Failures

If your eSIM has been installed and activated, but you still can’t connect to a network, try these steps:

• Restart your device
• Turn Data Roaming off, then on again.
• Switch Airplane Mode on and off.
• Toggle the eSIM off and back on in SIM card settings.

Do not delete your eSIM profile. Unlike physical SIMs, eSIMs can't be reinstalled using the same QR code. If you delete it, you'll need to request a new code from your carrier or provider.

Invalid QR Code

If your device can’t scan the QR code or throws an error:

• Clean your camera lens and scan in a well-lit environment.
• Check if the QR code has expired or was already used—most are single-use only.
• If supported, try manual activation using the SM-DP+ address and activation code.
• Still not working? Request a new QR code from your carrier or eSIM provider.

If you're a Nomad user facing issues with connectivity after trying the various troubleshooting methods, please contact our customer support with screenshots and your eSIM details so we can help promptly.

Can I Transfer My eSIM From Another Device?

It depends on your carrier.Some allow eSIM transfers between Samsung devices, while others may require issuing a new QR code. Nomad eSIMs cannot be transferred across devices.

Once you confirm that you can simply transfer eSIM across devices, here is how you can transfer your existing eSIM from your older Galaxy devices to your new Galaxy S23 phone.

1. Display your QR code on another screen or print it
2. Go to Settings > Connections > SIM Card Manager
3. Select Transfer SIM from another device
4. On your old phone, select Transfer and follow the steps.

Once transferred, your eSIM will no longer work on the old device.; and if you are switching from iOS to Samsung, you will need your service provider to help with the transfer.

Frequently Asked Questions (FAQs)

Can the Samsung Galaxy S23 use an eSIM and a physical SIM at the same time?

Yes. The Galaxy S23 supports dual SIM functionality, which includes using one physical SIM and one eSIM at the same time.

How many eSIMs can I store on my Galaxy S23?

You can store multiple eSIM profiles on the S23, but only one eSIM can be active at any given time. You can switch between them as needed.

Will I lose my eSIM if I factory reset my Galaxy S23?

Yes, a factory reset will typically remove installed eSIMs. You’ll need to reinstall the eSIM using the original QR code or request a new one from your provider.

Can I transfer an eSIM from another phone to the Galaxy S23?

It depends on your carrier. Some support direct eSIM transfers, while others require a new activation. Nomad eSIMs cannot be transferred and must be reinstalled on the new device using a fresh QR code.

What should I do if my eSIM doesn’t activate or connect?

Try restarting your device, toggling airplane mode, or re-enabling the eSIM. Ensure data roaming is turned on. If issues persist, contact your provider’s support team with screenshots and activation details.

Can I use hotspot and data sharing with my Nomad eSIM?

Yes. Nomad eSIM plans support mobile hotspot and data sharing on most compatible devices, including the Galaxy S23.

Is internet access required to install an eSIM on the Galaxy S23?

Yes. Whether installing via QR code, activation code, or pre-assigned plan, your phone must be connected to Wi-Fi or mobile data to complete the process.

Find Your Perfect Travel eSIM with Nomad

With Nomad travel eSIMS, staying connected around the world has never been easier or more affordable. Choose from flexible data plans in over 200 countries, starting from just $1.10/GB. Planning to visit multiple destinations? Regional and global eSIM plans are available to ensure seamless connectivity wherever your travels take you.

Each plan clearly lists the supported networks in the app and on the Nomad web store, so you can check coverage before purchase. Managing your data is simple—track usage directly from your phone’s settings or via the Nomad app (where available). Need to stay online across devices? Hotspot and data sharing are supported too.

Ready to travel smarter? Shop Nomad eSIMs now and stay connected wherever you go.