eSIM Guide · eSimply

What is an eSIM?

eSIM stands for embedded Subscriber Identity Module — the same thing a physical SIM card does, built directly into your phone. No slot, no plastic, no swapping. You download a data plan over the internet and your phone connects to a mobile network wherever you are.

How does an eSIM work?

Unlike a removable SIM card that is physically tied to one carrier, an eSIM is programmable. It lives inside your phone's hardware. When you buy an eSIM data plan, you receive a QR code or a set of activation codes. You scan the code (or enter it manually), your device downloads the carrier profile, and you're connected — all without touching your SIM tray.

You can store multiple eSIM profiles on one device, switching between them in your phone settings. Only one profile is active for data at a time.

eSIM vs physical SIM card

eSIMPhysical SIM
SetupDownload in minutesBuy or order; wait for delivery
Switching plansIn-app or via settingsChange SIM card
Lost or damagedNot possible — it's embeddedCard can be lost or snapped
Carry two numbersYes — on dual-SIM devicesYes — if your phone has two slots
E-wasteZero plasticPlastic card produced per plan
Works abroadBuy a local rate plan without leaving homeMust source a local SIM on arrival

eSIM vs international roaming

eSimply eSIMRoaming on your home plan
CostLocal-rate prepaid data planYour carrier's roaming markup applies
Your home numberStays active on your other SIMStays active
SetupBuy and download before you flyAutomatic — but charges start immediately
ControlYou choose exactly how much data to buyUsage-based billing — surprises possible

Note: Roaming prices vary widely by carrier. eSimply does not publish home-carrier rates. Always check your carrier's roaming charges before travelling.

Is my phone compatible with eSIM?

Quick check

Dial *#06# on your phone. If you see a line labelled EID, your phone is eSIM-capable.

You also need your phone to be unlocked — not tied to a specific carrier. If you're unsure, contact your carrier.

Check the full device list

We maintain a full list of compatible phones, tablets, and wearables — including Apple, Google, Samsung, and others.

→ Check compatible devices

How to install an eSimply eSIM

Method 1 — QR code (recommended)

  1. In your eSimply account, go to My eSIMs and open your plan.
  2. On a second device (or print the QR code), display the QR code.
  3. On your phone, go to Settings → Mobile/Cellular → Add eSIM (wording varies by device).
  4. Scan the QR code. Your device will download the eSIM profile.
  5. Confirm the eSimply line is set as your data line.

You'll need a Wi-Fi or existing mobile data connection for the download step.

Method 2 — Manual entry

If you can't scan the QR code, eSimply also provides an SM-DP+ address and activation code in your account. Enter these manually in your phone's eSIM setup screen.

Who is an eSIM for?

Frequently asked questions

Do I need Wi-Fi to install an eSIM?

Yes — you need a Wi-Fi or existing mobile data connection to download the eSIM profile. Once installed, the eSIM works independently on the local mobile network.

Can I use my regular SIM at the same time?

On dual-SIM devices, yes. Your home SIM stays active for calls and texts, while the eSimply eSIM handles your data abroad.

Will my WhatsApp number still work?

Yes. WhatsApp is linked to your phone number, which stays on your home SIM. Your eSIM is used only for data.

When does my data plan start counting?

Your plan starts from the activation date you set during purchase. Days do not count down before that date.

Can I get a refund if I change my plans?

Yes. If you haven't installed or activated your eSIM, you can request a full refund within 6 months of purchase by emailing hello@esimply.io.

Ready to get connected?

Browse prepaid eSIM plans for 200+ destinations. Activate before you fly, use it the moment you land.

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Qu'est-ce qu'une eSIM ? Guide simple et complet | eSimply