Does the eSIM work up at the castle and on the Philosophers' Walk?

Yes. Coverage reaches the castle terrace and along the Philosophenweg, so maps, the Bergbahn funicular times and your photos upload without hunting for Wi-Fi. Signal can soften among the wooded hillside switchbacks, so save an offline map for the climb.

Is it just for Heidelberg or the wider region?

It's a single Germany-wide plan. Beyond Heidelberg it covers the whole Rhine-Neckar area and easy day trips to Frankfurt, the Palatinate wine villages or Speyer's cathedral — all on one data allowance, no extra SIM.

Heidelberg eSIM.

Name: Heidelberg travel eSIM
Brand: My Holiday SIM

The castle ruin above the Neckar to the Philosophers' Walk — Heidelberg, connected.

from $2.15/day · unlimited dataAll of Germany →

Unlimited data5G where availableInstant QR by emailKeep your number

1 · How many days?

10 daysOther:days

2 · How much data?

3GBBest pricevalid 15 days$5.11$0.51/day

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

Travellers (one eSIM each)

1 × 3GB (valid 15 days) · 10-day trip$5.11

Good to know in Heidelberg

Heidelberg has no airport of its own — most visitors fly into Frankfurt (FRA) and ride the train down in about an hour. This national eSIM is already working when you land at FRA, right through to Heidelberg.

Two simple ways to buy

Heidelberg eSIM plans: unlimited, or by the GB.

Every Heidelberg eSIM from My Holiday SIM is one of two straightforward types. Pick whichever fits how you travel in Heidelberg — 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 Heidelberg?

A rough, honest guide to sizing your Heidelberg eSIM so you're not guessing. Most travellers in Heidelberg 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

Heidelberg eSIM: your local data guide.

Heidelberg is Germany's romantic classic — a red-sandstone castle ruin above the Neckar, the pedestrian Hauptstraße running through the old town, and the Philosophers' Walk offering the postcard view. A Heidelberg eSIM keeps maps, the castle funicular timetable, translation and restaurant bookings live as you cross the Old Bridge or hike up to the Königstuhl.

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

Landing at Frankfurt Airport (FRA)?

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

Heidelberg eSIM pricingbest-value plan · per day

Days

Per day

Total

Saving

3 days1GB

$0.54

$1.63

—

5 days1GB

$0.33

$1.63

−39%

7 days1GB

$0.23

$1.63

−57%

10 days3GBPopular

$0.51

$5.11

−6%

15 days3GB

$0.34

$5.11

−37%

30 days3GB

$0.23

$6.81

−57%

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

eSIM vs the old ways in Heidelberg

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

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

On the ground

Where you'll lean on data in Heidelberg.

Heidelberg Castle

The hilltop ruin is reached by the Bergbahn funicular; data covers ticket times, audio-guide look-ups and framing that classic terrace photo.

Altstadt & Hauptstraße

Germany's longest pedestrian street threads the old town — maps and reviews help you find the best student pubs and the Käthe Wohlfahrt shop.

Old Bridge & Philosophenweg

Cross the Karl Theodor Bridge and climb the Philosophers' Walk for the classic view; navigation keeps the steep switchbacks simple.

University Quarter

Home to Germany's oldest university and the quirky Studentenkarzer; lean on translation and bookings around the lively Marktplatz cafés.

The practical bit

Getting around Heidelberg on your eSIM.

Apps you'll want online in Heidelberg

VRN / rnv Start— Rhein-Neckar app for tram and bus tickets and live times across Heidelberg; mobile fares need data.
DB Navigator— Deutsche Bahn app for the train in from Frankfurt Airport or Stuttgart; live schedules need data.
Google Maps— Walking directions along the Hauptstraße and up the steep Philosophenweg switchbacks; offline maps need data.
FREENOW— Germany's main taxi app; hail a licensed cab back from the castle or a student pub.

How long to stay in Heidelberg

Most people visit Heidelberg on a day trip or a single overnight, enough for the castle, the Old Bridge, the Hauptstraße and the Philosophers' Walk view.

How much data for Heidelberg

A day trip or overnight of maps, translation and castle photos barely troubles 1GB; pick a balanced 3-5GB if you're touring the wider Rhine-Neckar region, or Unlimited to stream and hotspot on longer stays.

Coverage in Heidelberg

Coverage is strong across Heidelberg's old town, the castle terrace and the Neckar riverfront, but 4G can soften among the wooded Philosophenweg switchbacks and up towards the Königstuhl, so keep an offline map handy.

Where you're headed

Discover Heidelberg.

Heidelberg, Germany — skyline and landmarks · stay connected with a Heidelberg eSIM from My Holiday SIM

Heidelberg, Germany — streets and everyday scenes · stay connected with a Heidelberg eSIM from My Holiday SIM

Heidelberg, Germany — sights worth exploring · stay connected with a Heidelberg eSIM from My Holiday SIM

Heidelberg, Germany — a travel moment · stay connected with a Heidelberg eSIM from My Holiday SIM

How to activate your Heidelberg 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 Heidelberg

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

New to eSIM in Heidelberg?

What is a Heidelberg eSIM?

A Heidelberg eSIM is a digital SIM that's already built into your phone. Scan one QR code and a local Heidelberg 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.

Peace of mind

Your Heidelberg eSIM: data-only, zero bill shock.

Your Heidelberg eSIM handles the internet while you travel. Your home number stays exactly where it is — no surprise roaming charges in Heidelberg, no swapping your real SIM out.

Keep your number & WhatsApp

The eSIM is data-only and runs alongside your home SIM. Your number, iMessage and WhatsApp keep working exactly as they do at home.

No roaming bills, ever

Turn data roaming OFF on your home SIM and ON for the eSIM. You pay once, up front — no overage, no metered surprises, no bill waiting when you land home.

One thing worth knowing

Because it's data-only, the eSIM can't receive bank verification (OTP) text codes — those still go to your home number. Keep it reachable on Wi-Fi calling, or use app-based codes.

Traveller relaxed and connected on her phone, no roaming bill to worry about

Why travellers choose My Holiday SIM for Heidelberg.

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 Germany.

5G where available, fast 4G everywhere else

Connected · 5G

Your eSIM joins Germany'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.

Telekom
Vodafone
O2
1&1

Popular places covered

BerlinMunichFrankfurtHamburgCologneDresdenNurembergHeidelberg

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 Heidelberg 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

Heidelberg eSIM questions, answered.

Heidelberg has no commercial airport of its own. Most travellers arrive at Frankfurt Airport (FRA), around an hour away by direct train, while Stuttgart (STR) is another option. Your national Germany eSIM works at both and on the journey in between.

Your Heidelberg 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 Germany?