Samsung Galaxy S23 eSIM Guide: Complete Setup and Usage 2026

by Adam Jellal 2026年1月11日

The Samsung Galaxy S23 series brought refined eSIM capabilities to Samsung's flagship lineup. All three models—Galaxy S23, S23+, and S23 Ultra—feature full eSIM support with Dual SIM functionality, making them excellent choices for travelers and anyone needing multiple phone lines.

Even as the S24 series has launched, the S23 remains a powerful and cost-effective option with identical eSIM capabilities. This guide covers everything you need to know about setting up and using eSIM on your Samsung Galaxy S23.

Get Qonnect eSIM for your Galaxy S23 →

Samsung Galaxy S23 eSIM Compatibility

All S23 Models Support eSIM

Every Galaxy S23 variant includes full eSIM functionality:

Model	eSIM Support	Physical SIM	Dual SIM	5G Support
Galaxy S23	✅ Yes	✅ Yes (nano-SIM)	✅ Yes	✅ Yes
Galaxy S23+	✅ Yes	✅ Yes (nano-SIM)	✅ Yes	✅ Yes
Galaxy S23 Ultra	✅ Yes	✅ Yes (nano-SIM)	✅ Yes	✅ Yes

Regional Variations

eSIM support varies by region:

Full eSIM support:

United States
United Kingdom
European Union
Canada
Australia
South Korea
Japan

May have restrictions:

Some Asian markets (China models lack eSIM)
Carrier-locked devices
Certain regional variants

How to check: Settings → Connections → SIM manager → look for "Add eSIM" option

eSIM Specifications

eSIM profiles: Store multiple eSIMs (typically 5-10)
Active SIMs: 2 simultaneous lines maximum
Dual SIM options: eSIM + eSIM, or eSIM + nano-SIM
5G on eSIM: Full 5G support
DSDS: Dual SIM Dual Standby—both lines receive calls/texts

How to Set Up eSIM on Galaxy S23

Before You Start

Requirements checklist:

Carrier-unlocked S23 (or locked to eSIM provider)
Active WiFi or mobile data connection
QR code or activation details from eSIM provider
Software up to date

Update software: Settings → Software update → Download and install

Method 1: QR Code Scanning (Recommended)

The most common method for travel eSIMs.

Step-by-step instructions:

Open Settings
Tap Connections
Tap SIM manager (or SIM card manager)
Tap Add eSIM
Select Scan QR code from service provider
Position camera to frame QR code
Wait for plan detection
Tap Add when prompted
Wait for download (1-5 minutes)
Name your eSIM (e.g., "Travel" or "Qonnect Europe")
Set line preferences

Tips for success:

Good lighting improves scanning
Hold phone steady
Ensure QR code is flat and undamaged
Need internet connection to download

Method 2: Manual Activation Code

If QR code scanning fails.

Steps:

Settings → Connections → SIM manager
Tap Add eSIM
Select Enter activation code
Enter SM-DP+ Address (provided by carrier)
Enter Activation Code
Enter Confirmation Code if required
Tap Connect
Wait for activation
Configure eSIM settings

Method 3: Carrier App Installation

Many carriers offer app-based eSIM setup.

Steps:

Download carrier's app from Galaxy Store or Play Store
Sign in to your account
Find eSIM or plan activation section
Follow in-app prompts
eSIM installs automatically

Carriers with app support: Most major US carriers (AT&T, T-Mobile, Verizon), UK carriers (EE, Vodafone, Three), and many international carriers.

Method 4: During Phone Setup

When setting up a new S23.

During initial setup:

Reach "Mobile network" setup screen
Choose to add eSIM
Scan QR code or select carrier
Complete activation
Continue with phone setup

Configuring Dual SIM on Galaxy S23

Dual SIM Options

Galaxy S23 supports these configurations:

Option 1: eSIM + nano-SIM

One eSIM active
One physical SIM in tray
Traditional dual SIM setup

Option 2: eSIM + eSIM (Dual eSIM)

Two eSIMs active
No physical SIM needed
Maximum flexibility

Setting Up Two Lines

After adding second SIM:

Settings → Connections → SIM manager
Name your SIMs:
- Tap each SIM
- Enter descriptive name
- Choose color for easy identification
Set default for calls:
- Tap Preferred SIM for calls
- Choose line or "Always ask"
Set default for messages:
- Tap Preferred SIM for messages
- Select default line
Set mobile data:
- Tap Mobile data
- Choose which SIM handles data

Smart Dual SIM Features

Auto Data Switching:

Automatically uses other SIM if primary loses signal
Enable: SIM manager → Auto data switching

Dial with:

Choose SIM before each call
Enable "Always ask" in call preferences

Managing eSIMs on Galaxy S23

Viewing Installed eSIMs

Settings → Connections → SIM manager
See all installed SIMs
Active SIMs show toggle ON
Tap any SIM for full details

Switching Active Data SIM

Quick method:

Swipe down for Quick Settings
Find SIM manager tile
Tap to switch data SIM

Settings method:

Settings → Connections → SIM manager
Tap Mobile data
Select desired SIM

Enabling/Disabling eSIM

To turn off without deleting:

Settings → Connections → SIM manager
Tap the eSIM
Toggle OFF Use SIM
eSIM remains stored but inactive

To re-enable:

Toggle Use SIM back ON

Renaming eSIM

Clear names prevent confusion:

Settings → Connections → SIM manager
Tap eSIM to rename
Tap current name
Enter new name (e.g., "Japan Data")
Tap Save

Deleting eSIM

Settings → Connections → SIM manager
Tap eSIM to remove
Tap Remove or Delete
Confirm deletion

Important: Deleted eSIMs require new QR code to reinstall. Save any QR codes you might need again.

Galaxy S23 eSIM for Travel

Why S23 Remains Great for Travel

Value proposition:

Full eSIM support at lower price than S24
Same Dual SIM capabilities
Excellent camera for travel photos
Strong battery life

eSIM benefits:

Install before departure
No SIM hunting at airports
Keep home number active
Affordable local data rates

Hardware advantages:

All-day battery
IP68 water resistance
Bright AMOLED display
Snapdragon 8 Gen 2 performance

Travel Setup Guide

Before your trip:

Purchase Qonnect eSIM for your destination
Receive QR code via email
Open Settings → Connections → SIM manager
Tap Add eSIM → Scan QR code
Scan and install eSIM
Name it (e.g., "Europe Data")
Leave disabled until arrival

Upon arrival:

Settings → Connections → SIM manager
Enable travel eSIM (toggle ON)
Set travel eSIM as Mobile data
Enable Data roaming for travel eSIM
Turn OFF data roaming on home SIM
Both lines now active

Result: Home number receives calls/texts, travel eSIM provides affordable data.

Get Qonnect eSIM for Galaxy S23 →

Multi-Country Trips

With multiple eSIM storage:

Store eSIMs for multiple destinations
Switch active data eSIM when crossing borders
No need to find local SIM vendors
Instant connectivity in each country

Troubleshooting Galaxy S23 eSIM Issues

eSIM Won't Download

Check internet connection:

Must have WiFi or cellular data
Try different WiFi network

Verify QR code:

Most codes are single-use
Check if already activated
Confirm code hasn't expired
Contact provider for replacement

Restart phone:

Hold Power + Volume Down
Select Restart
Try installation again

Update software:

Settings → Software update
Install any pending updates

No Service After Installation

Verify eSIM is enabled:

Settings → Connections → SIM manager
Ensure eSIM toggle is ON

Check data assignment:

Correct SIM selected for Mobile data?
Data roaming enabled for travel eSIM?

Check APN settings:

Settings → Connections → Mobile networks → Access Point Names
Usually auto-configured, but verify if issues persist

Manual network selection:

Settings → Connections → Mobile networks
Network operators → Select automatically

Reset network settings (last resort):

Settings → General management → Reset
Reset network settings
Note: Reconnect to WiFi after

Dual SIM Issues

Only one SIM working:

Verify both SIMs enabled in SIM manager
Check if one SIM has signal issues
Restart phone

Can't receive calls on one line:

Ensure line is enabled
Check call forwarding isn't active
Verify with carrier that line is active

Data not switching:

Check which SIM is set for Mobile data
Disable/enable data SIM
Toggle Auto data switching if available

Galaxy S23 eSIM Compatibility with Carriers

US Carriers

Carrier	eSIM Support	Notes
AT&T	✅ Yes	Full support
T-Mobile	✅ Yes	Full support
Verizon	✅ Yes	Full support
US Cellular	✅ Yes	Full support
Google Fi	✅ Yes	Full support
Visible	✅ Yes	Full support

International Carriers

Region	Major Carriers with eSIM
UK	EE, Vodafone, Three, O2
EU	Orange, Vodafone, Deutsche Telekom, Movistar
Canada	Rogers, Bell, Telus
Australia	Telstra, Optus, Vodafone

Frequently Asked Questions

Does Galaxy S23 support eSIM?

Yes. All Galaxy S23 models (S23, S23+, S23 Ultra) fully support eSIM.

Can I use two eSIMs on Galaxy S23?

Yes. Galaxy S23 supports Dual eSIM—two eSIMs active without physical SIM.

How many eSIMs can S23 store?

Typically 5-10 eSIM profiles depending on region and carrier.

Will eSIM give me 5G on S23?

Yes. Full 5G support on eSIM where 5G networks are available.

Is S23 eSIM the same as S24?

Yes, eSIM functionality is identical. S24 adds Galaxy AI features but eSIM capabilities are the same.

Can I transfer my eSIM from S23 to new phone?

Depends on carrier. Some support eSIM transfer, others require new activation.

Does eSIM work on carrier-locked S23?

Only with that carrier's eSIM. Unlock phone for full eSIM flexibility.

Conclusion

Samsung Galaxy S23's eSIM support provides the same flexibility as newer models at a more accessible price point. With Dual eSIM capability, multiple profile storage, and full 5G support, the S23 remains an excellent choice for travelers and anyone needing multiple phone lines.

Key takeaways:

All S23 models fully support eSIM
Dual eSIM: use two eSIMs without physical SIM
Store multiple eSIM profiles
Full 5G support on eSIM
Same eSIM capabilities as S24
Excellent value for travel

Whether you're keeping your S23 or considering it as a cost-effective purchase, its eSIM capabilities will serve you well for years to come.