Will I get signal when hiking Snowdon (Yr Wyddfa)?

Coverage is patchy on the mountain. You may catch signal near the summit café or on lower paths, but the ridges regularly drop out, so never rely on live maps alone up high.

Is data reliable along the Pembrokeshire coast?

In towns like Tenby and St Davids, yes. On the remoter stretches of the coast path and quieter beaches, expect gaps, so download tide times and maps before longer walks.

Wales eSIM.

Name: Wales travel eSIM
Brand: My Holiday SIM

From Cardiff Bay to Snowdonia's peaks and the Pembrokeshire coast — Wales, fully connected.

from $2.15/day · unlimited dataAll of United Kingdom →

Unlimited data5G where availableInstant QR by emailKeep your number

1 · How many days?

10 daysOther:days

2 · How much data?

3GBBest pricevalid 15 days$6.01$0.60/day

Cheapest plan covering your trip: 3GB, valid 15 days.

Travellers (one eSIM each)

1 × 3GB (valid 15 days) · 10-day trip$6.01

Good to know in Wales

Welsh mountain rescue is often called to walkers who lose signal on Yr Wyddfa; download offline OS maps and share your route, as coverage on the high ridges is unreliable at best.

Best time to visit Wales

May to September brings the driest, warmest conditions for hiking Snowdonia and the coast paths, though Wales is famously green thanks to frequent rain year-round.

Two simple ways to buy

Wales eSIM plans: unlimited, or by the GB.

Every Wales eSIM from My Holiday SIM is one of two straightforward types. Pick whichever fits how you travel in Wales — you can always top up or switch on your next trip.

Traveller streaming and browsing freely on an unlimited-data travel eSIM

Unlimited plans

High-speed data, nothing to count

Priced per day — the longer you stay, the better the daily rate. Ideal for streaming, hotspot and longer trips where you'd rather not watch a data meter. A fair-use policy keeps speeds fast for everyone; see each plan for the detail.

Best for streaming, video calls & hotspot
Great for longer or open-ended trips
One price per day — no GB anxiety

By-the-GB plans

3GB10GB20GB

A set bundle, brilliant value

A fixed data allowance (say 3 GB or 10 GB) valid for your travel days. The best-value pick for lighter trips built around maps, messaging and a bit of browsing. Running low? Top up in a couple of taps — nothing to reinstall.

Best value for lighter, shorter trips
Clear allowance — pay only for what you need
Top up any time from your phone

Compare plans →Not every destination has both types — the picker shows what's available where you're headed.

Plan your data

How much data do you need in Wales?

A rough, honest guide to sizing your Wales eSIM so you're not guessing. Most travellers in Wales are comfortable on 3–5 GB a week — heavy streamers just go Unlimited.

Traveller checking maps and messages on her phone using a My Holiday SIM eSIM

Not sure? Start with a 5 GB plan — you can top up in seconds if you run low.

Light

~1 GB / week

Maps, messaging & email

Google Maps, WhatsApp, email and the odd search. Plenty for a city break where you mostly need directions.

Suits 1–3 GB plans

Balanced

3–5 GB / week

Everyday holiday use

Everything above plus social scrolling, music, cloud photo backups and a little video. Where most travellers land.

Suits 5–10 GB plans

Wales eSIM: your local data guide.

Wales squeezes castles, coast and mountains into a compact country: Cardiff's waterfront and rugby, the surf beaches of the Gower and Pembrokeshire, and the summits of Eryri, or Snowdonia. A Wales eSIM keeps your trail maps, tide times and bus apps working whether you're down in the valleys or up a mountain path.

One eSIM for Wales and all of United Kingdom. It's the national United Kingdom eSIM — from $2.15/day with unlimited data, working the same in Wales as it does the moment you leave it.

Landing at Cardiff (CWL); many visitors also fly into Bristol (BRS)?

Install the QR at home, then switch the eSIM on as you taxi in — you're online before you reach the arrivals hall.

Wales eSIM pricingbest-value plan · per day

Days

Per day

Total

Saving

3 days1GB

$1.04

$3.12

—

5 days1GB

$0.62

$3.12

−40%

7 days1GB

$0.45

$3.12

−57%

10 days3GBPopular

$0.60

$6.01

−42%

15 days3GB

$0.40

$6.01

−62%

30 days5GB

$0.23

$6.80

−78%

Each trip length shows the best-value plan that covers it. Total always shown before you pay.

eSIM vs the old ways in Wales

eSIM

ROAMING

AIRPORT SIM

Data allowance

Unlimited

Usually capped

Rarely unlimited

Price known upfront

Prepaid

Billed after

Varies at the desk

Ready when you land

Instantly

After the queue

Keep WhatsApp number

SIM swapped

Wales eSIM from $2.15/day — the whole bill, agreed before you fly.

Across the region

Where you'll lean on data in Wales.

Cardiff

Strong city coverage supports match-day crowds around the Principality Stadium, buses and ride apps across the capital.

Snowdonia (Eryri)

Villages like Betws-y-Coed have signal, but the ridges and summit of Yr Wyddfa drop out, so carry offline maps.

Pembrokeshire Coast

Tenby and the main resorts are covered, though the cliff-top coast path has stretches with little to no signal.

Brecon Beacons (Bannau Brycheiniog)

Coverage follows the towns and A-roads but fades on the open moorland and higher waterfall trails.

The practical bit

Getting around Wales on your eSIM.

Apps you'll want online in Wales

Traveline Cymru— Bus and train journey planning and live times across Wales.
Trainline— Transport for Wales and cross-border rail tickets and live times.
Uber— Ride-hailing in Cardiff and Swansea; rural areas rely on local taxis.
OS Maps— Offline hiking maps essential for Snowdonia and the coast paths.

How long to stay in Wales

Most spend four days to a week in Wales, combining a city break in Cardiff with a few nights hiking Snowdonia or touring the Pembrokeshire coast.

How much data for Wales

A light-to-balanced 2-4 GB handles a week of maps, tide and bus apps; add Unlimited if you'll hotspot at coastal cottages or stream on rainy days.

Coverage in Wales

Cardiff, Swansea and the valleys have solid 4G and 5G, and main roads stay connected, but signal genuinely thins across the Snowdonia peaks, Brecon moorland and remote coastal paths.

Where you're headed

Discover Wales.

Breathtaking view of rugged mountains and green valleys under a vibrant blue sky.

Breathtaking view of boats moored in Conwy Harbor with historic Conwy Castle in the background.

Picturesque view of Conwy Castle in Wales with river and landscape.

Black and white photo capturing the scenic landscape of North Wales with distant hills and a rural road.

Cities in Wales

Zoom in on Wales.

Cardiff eSIM

How to activate your Wales eSIM.

Full installation guide →

A traveller happily planning her next trip with a map and phone

Buy your plan

Choose your days — the QR code arrives by email in seconds.

A traveller installing her eSIM from the sofa in two minutes

Install at home

Scan the QR on Wi-Fi before you fly. About two minutes, no app needed.

Friends laughing together while packing for a holiday

Fly relaxed

Nothing counts down yet — your days start only at first connection.

A joyful family reunion at the airport arrivals hall

Switch on in Wales

Turn the line on when you land. Connected before baggage claim.

New to eSIM in Wales?

What is a Wales eSIM?

A Wales eSIM is a digital SIM that's already built into your phone. Scan one QR code and a local Wales data plan installs alongside your home SIM — no plastic, no tray tool, no swap. Your number and WhatsApp stay exactly where they are.

✓ 2-minute install✓ Keep your number✓ Works on phones from 2018+

How eSIM works →Check my phone

A traveller with a backpack smiling at her phone — online abroad with My Holiday SIM

Connected · 5G

Home SIM · calls & WhatsAppHoliday eSIM · unlimited data

30-day refund promiseUnused, uninstalled eSIM? Full refund, no questions.

The price is the billPrepaid and final — roaming charges can't happen.

Days start when you landInstall early with zero pressure; counting begins at first connection.

Humans, 24/7Real people answer, before, during and after the trip.

Why travellers choose My Holiday SIM for Wales.

Instant eSIM deliveryQR code in your inbox seconds after checkout — even at the departure gate.

No physical SIMNothing to collect, lose or poke out with a paperclip. Your home SIM stays put.

Keep your WhatsApp numberData flows through us; WhatsApp stays on your home number. Family always reaches you.

A traveller at the departure gate, eSIM ready on her phone

eSIM ready in ~2 minutes

No bill shock, everOne clear price before you fly. Roaming charges simply can't happen.

Secure paymentsCards, Apple Pay, Google Pay, PayPal and Klarna — encrypted end to end.

Real human supportReal people — before, during and after your trip. Live chat and email, no bots. Easy top-ups too.

Coverage in United Kingdom.

5G where available, fast 4G everywhere else

Connected · 5G

Your eSIM joins United Kingdom's partner networks automatically — no settings to choose, no manual network hunting. If signal drops in a remote spot, toggling Airplane Mode for a few seconds forces a fresh connection.

EE
O2
Vodafone UK
Three

Popular places covered

LondonEdinburghManchesterLiverpoolBathYorkCardiffBelfast

Keep data roaming ON for the eSIM line only — that's the switch travel eSIMs use, and it never adds charges on our plans.

Trusted networks, honest numbers.

No invented star ratings behind your Wales eSIM — just the numbers we actually stand behind.

Friendly globe with location pins — coverage on every continent

My Holiday SIMSTAY CONNECTED. ANYWHERE.

200+

destinations — every continent covered

regions covered by a single regional eSIM

~2 min

typical install — QR to connected

Live

chat & email support

Before you fly

Wales eSIM questions, answered.

Yes. The single national United Kingdom plan covers all of Wales, so the same data works from Cardiff and Swansea in the south up to Snowdonia and Anglesey in the north.

Your Wales eSIM glossary.

eSIMA SIM built into your phone's hardware. Plans install onto it digitally — no plastic card involved.

QR profileThe code we email you. Scanning it downloads your holiday plan onto the eSIM. One scan per device.

Data roaming (the switch)The toggle travel eSIMs use to join partner networks abroad. On our plans it never adds charges — keep it ON for the eSIM, OFF for your home SIM.

Hotspot / tetheringSharing your phone's data with laptops and tablets. Included on our plans wherever networks allow.

Top-upExtra days added to a live plan from your account. They append to the end — nothing overlaps.

First connectionThe moment your eSIM first joins a network at the destination — that's when your days start counting, not before.

Travelling wider in United Kingdom?