Using a Galaxy S23 in United Kingdom: eSIM Setup & Internet Guide
π¬π§ Galaxy S23 works in United Kingdom
- β Fully compatible with EE, O2, Vodafone UK, Three UK
- β eSIM installs in 2 minutes β no SIM swap needed
- β US carrier models may be locked β confirm before traveling
- β Supports 2 active eSIMs β keep your home SIM active
Recommended eSIM Plans for United Kingdom
See all plans β1.0GB / 7 Days
Uki Mobile
1 GB Β· 7 days
1.0GB / 3 Days
Uki Mobile+
1 GB Β· 3 days
1.0GB / 7 Days
Uki Mobile+
1 GB Β· 7 days
2.0GB / 15 Days
Uki Mobile
2 GB Β· 15 days
Prices shown for Free tier. Pro members save 7%, Premium save 12%.
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Galaxy S23 compatibility in United Kingdom
Network band compatibility
Galaxy S23 supports LTE B1, B2, B3, B4, B5, B7, B8, B12, B13, B17, B20, B25, B26, B28, B38, B40, B41, B66. Snapdragon 8 Gen 2 modem. Strong global band coverage including B19 for Japan and B20 for Europe.
SIM configuration
Galaxy S23 supports nano-SIM + eSIM. US carrier variants may be locked β check before traveling or buy unlocked. Use Settings β Connections β SIM Manager to add an eSIM, not the regular Connections menu. Samsung's eSIM UI is different from stock Android.
Active eSIMs
2
Stored profiles
Up to 10
Physical SIM
Yes
Carrier lock risk
Check first
How to install your United Kingdom eSIM on Galaxy S23
Complete these steps at home over Wi-Fi before your flight. Takes 2β3 minutes.
- 1
Open Settings β Connections β SIM Manager β Add eSIM
- 2
Select "Scan QR code from service provider"
- 3
Scan the QR code from your LTE.app order confirmation
- 4
Follow the on-screen prompts to complete installation
- 5
Set as your data SIM when you arrive at your destination
- 6
After landing in United Kingdom, go to Settings and switch on your LTE.app eSIM line. Your phone connects to EE, O2, Vodafone UK, Three UK automatically.
What happens when you land in United Kingdom
- 1
Install your eSIM on Galaxy S23 before your trip
Scan the QR code from your LTE.app order at home over Wi-Fi. Takes 2β3 minutes. Your home SIM stays active and untouched throughout.
- 2
Land at Heathrow Airport
After your flight, disable Airplane Mode. Open Settings β Connections β SIM Manager and enable your LTE.app eSIM line.
- 3
Connect to EE, O2, Vodafone UK, Three UK
Your Galaxy S23 automatically connects to United Kingdom's LTE network. London has excellent LTE. Other major UK cities (Manchester, Birmingham, Edinburgh, Glasgow) are well covered. Rural Wales, the Scottish Highlands, and Cornish peninsulas have coverage gaps, particularly for 4G.
- 4
Maps, messaging, and apps work immediately
Navigation, translation, ride-hailing, and messaging apps all work the moment you exit the arrivals hall β no queuing, no SIM swap.
Roaming vs eSIM in United Kingdom: cost comparison
Roaming your home carrier in United Kingdom costs significantly more than a local eSIM.
Post-Brexit, EU residents may face roaming charges in the UK depending on their carrier. US visitors pay $10β15/day with major carriers.
Several EU carriers have re-introduced charges for UK roaming post-Brexit. Check your home carrier's UK policy before assuming free roaming applies. UK SIM cards (Three, GiffGaff) offer good value β Three's tourist SIMs include substantial data for Β£10β20. An LTE.app UK eSIM on EE or O2 is competitive and activates without store visits.
LTE coverage in United Kingdom for Galaxy S23 users
The UK uses LTE bands 1, 3, 7, 8, and 20. EE has the widest UK LTE coverage. Three, Vodafone UK, and O2 also provide strong urban coverage.
London has excellent LTE. Other major UK cities (Manchester, Birmingham, Edinburgh, Glasgow) are well covered. Rural Wales, the Scottish Highlands, and Cornish peninsulas have coverage gaps, particularly for 4G.
Frequently asked questions β Galaxy S23 in United Kingdom
Is the Galaxy S23 compatible with United Kingdom's mobile network?
Yes. Galaxy S23 supports LTE B1, B2, B3, B4, B5, B7, B8, B12, B13, B17, B20, B25, B26, B28, B38, B40, B41, B66. Snapdragon 8 Gen 2 modem. Strong global band coverage including B19 for Japan and B20 for Europe. United Kingdom uses LTE The UK uses LTE bands 1, 3, 7 β all supported by the Galaxy S23.
Can I keep my home SIM active while using a United Kingdom eSIM on my Galaxy S23?
Yes. The Galaxy S23 supports 2 active eSIMs simultaneously. You can keep your home SIM active for calls and SMS while your LTE.app United Kingdom eSIM handles data. Set United Kingdom eSIM as your data SIM in Settings.
Is my Galaxy S23 carrier-locked? Will it work in United Kingdom?
Galaxy S23 supports nano-SIM + eSIM. US carrier variants may be locked β check before traveling or buy unlocked. Use Settings β Connections β SIM Manager to add an eSIM, not the regular Connections menu. Samsung's eSIM UI is different from stock Android. To use an eSIM in United Kingdom, your device must be unlocked. Contact your carrier or check Settings β if you can add an eSIM from another provider, it is unlocked.
When should I install the United Kingdom eSIM on my Galaxy S23?
Install it at home over Wi-Fi before your flight. The process takes 2β3 minutes using the QR code from your LTE.app order. United Kingdom requires the eSIM to be installed before arrival in some cases β never wait until you land. Heathrow Airport has free Wi-Fi if you forget, but pre-install is strongly recommended.
How many eSIM profiles can I store on my Galaxy S23?
The Galaxy S23 can store up to 10 eSIM profiles, with 2 active at once. You can buy and install eSIMs for multiple countries in advance and switch between them without deleting old ones.
Other devices in United Kingdom
More United Kingdom resources
Ready to use a Galaxy S23 in United Kingdom?
Install your eSIM before your flight. Works the moment you land at Heathrow Airport.
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