Skip navigation
  • Private
  • Business
  • Abroad
  • Announcements
Mobile Vikings
  • Streaming
  • Viking Deals
  • Help
My Viking
Mobile Vikings
My Viking
Viking illustratie

All about your SIM card

Physical or digital, there’s a SIM for everyone!

Topics on this page
  • Physical SIM card or eSIM
  • Activate SIM card
  • Your SIM card details
  • Identify your sim card
  • Need a new (replacement)SIM card?
  • Handing over or sharing your SIM card
  • FAQ

Choices, choices…

Size does matter, at least when it comes to your physical SIM card. Depending on your device, you’ll need a standard, micro or nano SIM.

When you order, we’ll send you a 3-in-1 SIM card, so you’re always covered. It’s standard SIM size, but you can pop out the two smaller formats if needed.

Or go fully digital with an eSIM. Super fast, eco-friendly, and no more fiddling with physical cards.

Physical SIM card

  • A traditional SIM card is sent by regular post after you place your order.

  • Works in every smartphone.

  • You will receive this SIM card after 3 to 5 working days.

  • Quite a hassle to switch a SIM card like that. Used many paperclips, have you?

Activate your SIM card

  • Activate physical SIM card
  • Activate eSIM

Your SIM card details

Your mobile number

  • Ordered a new SIM card? You’ll find your new number in My Viking.

  • You can always find your existing mobile number(s) in your My Viking products overview.

  • You can’t change your phone number. The number you transfer to us, or the brand-new one you get with your SIM card, is stuck with you for good.

Your SIM card number

More info

Identify your sim card

The law requires us to know who’s behind every SIM card. You identify yourself by making your next payment with Bancontact. Depending on your product, you can also use itsme.

Within 18 months of your first payment, we’ll ask you to re-identify.

Good to know

  • Your first payment and the 18-month check-in always need to be done using a Belgian payment method. For all other payments, you choose what suits you best.

  • Setting up automatic or SMS payments with a foreign bank account? Then you won't be able to activate a prepaid card.

Need a new (replacement) SIM card?

  • New device of the same brand?

    Got an eSIM on an iPhone, Samsung, or Google smartphone, and is your new device from the same brand? Your eSIM will automatically move along while setting up your new phone! No need to scan a QR code or delete your old eSIM profile yourself. Note: this only works between devices of the same brand (so iPhone to iPhone works, but iPhone to Samsung doesn't).

  • New device of a different brand?

    No problem, as long as your new phone supports eSIM. Just follow the steps in the eSIM tab below.

Handing over or sharing your SIM card

Passing on your number to a friend or family member? You can easily manage that yourself in your My Viking account:

  1. 1

    Choose your SIM card > Product settings > Transfer SIM card to someone else.

  2. 2

    Fill in the new owner's details.

  3. 3

    They’ll get an email and just need to click the button to accept the transfer.

  4. 4

    They enter the required details.

  5. 5

    Done! The new owner receives a confirmation email.

Frequently asked questions

Have you been waiting for more than five working days? Get in touch with us so we can send you a new SIM card. Please make sure to include the correct delivery address again.

SIM cards are sent by regular mail and therefore do not include track & trace. It is likely that the first SIM card was lost in the mail.

I haven’t received my physical SIM card. What should I do?

You can request a SIM card for a family member (parents, grandparents, children, grandchildren, siblings), your spouse, your legal cohabitant, or someone you are the legal guardian of.

Can I request a SIM card for someone else?

Every number is linked to one specific SIM card. You’ll find out which card goes with which number during activation:

  1. 1.

    Go to your My Viking account and select the number you want to activate.

  2. 2.

    Enter the last 4 digits of the code on your SIM card (or holder).

  3. 3.

    Match? Great! You can complete the activation right away.

  4. 4.

    Error message? That means the card belongs to another number. Try the digits from one of your other SIM cards.

Pro tip: Write the phone number on the holder as soon as a card is accepted. That way, you won't mix them up for the next ones!

I received multiple SIM cards. Which one belongs to which number?

That’s not possible. If you need an extra SIM card - for example, for your car or tablet - you’ll need to order a new SIM card with a new number.

First, decide whether you want a subscription or a prepaid SIM card. You can choose between a physical SIM card or an eSIM. Just follow the steps on the order page and you’re good to go! ;-)

Can I order an extra SIM card for the same number?

Is your new number already in use on WhatsApp? Your new number might be a recycled one, meaning someone else used it before. Is it still linked to the previous owner's WhatsApp account? Then you might receive messages from strangers, see an old profile picture or groups, or get asked for a PIN code you don't know.

Confirm your number via SMS Install WhatsApp, enter your new number, and put in the SMS code. That’s how you prove the number is yours. WhatsApp logs out the previous user immediately, so they won't be able to read your chats.

Still seeing old info or getting messages from strangers?

  • Update your name, profile picture, and status.

  • Leave groups you don't belong to.

  • Block unknown numbers.

Most messages will fade out within 1 to 2 weeks.

Is WhatsApp asking for a PIN you don't know? Then the previous owner set up two-step verification. Tap 'Forgot PIN?' and then 'No access to email?'. After 7 days, the old PIN expires and you can set your own. Make sure not to enter wrong PINs during that period, or the timer resets. WhatsApp enforces this wait time, so we can't shorten it for you.

Still stuck after 7 days? Reach out to WhatsApp support first. If you're still locked out or the messages keep coming after that, drop us a line!

Is your new number already in use on WhatsApp?

Getting unwanted calls? You can block any phone number directly in your smartphone's settings. Easy peasy! You handle this yourself on your device, no need to request anything from us.

  1. 1.

    Open the Phone app: On your smartphone, open the standard Phone app you normally use to make calls.

  2. 2.

    Find and block the number:

  3. 3.

    • On Android: Tap and hold the number in your recent calls list, then select Block number (or Report as spam). The exact naming can vary slightly depending on your brand and Android version.

    • On iPhone: Tap the 'i' icon next to the number in your call log and scroll down to select Block this Caller.

  4. 3.

    Check the status: Once the number is on your blocked list, it won't be able to reach you directly anymore.

Can I still receive voicemail messages?

If your voicemail is active, the call itself will be rejected on your screen, but the caller will be forwarded to your voicemail. So yes, they can still leave a message.

What happens to that message depends on your device and settings:

  • iPhone (iOS): A blocked caller can usually still leave a voicemail, but you won't get a notification for it. You can find these messages separately in your Phone app under voicemail, in the Blocked Messages section.

  • Android: Whether a blocked caller can leave a voicemail depends on your phone's brand and Android version. Often the call is completely blocked, but sometimes a message still comes through. Check your phone settings to be sure!

How to block a number and what happens to your voicemail?
Mobile Vikings
  • Combo
  • Internet
  • Fiber
  • Streaming
  • Subscriptions
  • Prepaid
  • Viking Deals
  • My SIM cards
  • Viking Points
  • Account
  • Top up SIM card
  • Discover the Mobile Vikings app
  • Activate SIM card
  • Configure your phone
  • Terms of use
  • Right of withdrawal
  • Accessibility
  • Jobs
  • Help & Support
Mobile Vikings nv © 2026 All rights reserved.
Kempische Steenweg 309/1, 3500 Hasselt, KBO no. 886.946.917

eSIM

  • You will immediately receive an email to activate your eSIM.

  • After activation you will receive a personal QR code. Simply scan it and off you go!

  • Easily switch between two numbers if your phone supports Dual SIM.

  • Use a local SIM when travelling outside the EU.

  • A more eco-friendly choice.

  • Only compatible with certain smartphones. Check if yours is supported on our eSIM page via the button below.

More about eSIM

This number has 19 digits and typically starts with 89323 for Mobile Vikings. You’ll find it on your SIM card or in your phone settings.

Your PIN and PUK code

  • Your PIN code unlocks your SIM card.

  • You’ll only need your PUK code if you enter the wrong PIN three times in a row.

Where can I find my PIN code?

How can I change my PIN code?

I forgot my PIN code

My PUK code

Lost your device or switching between a physical SIM and an eSIM?

Request a free replacement SIM card. Choose which SIM card you need below.

  1. 1

    Go to your My Viking account and request a replacement SIM card.

  2. 2

    Is your device lost or stolen? Make sure to indicate that you want to block your old SIM card right away.

  3. 3

    Your SIM card will arrive via bpost within 3 to 5 business days. There is no Track & Trace, but you'll get an email with all the details.

  4. 4

    SIM card in your mailbox? Activate it, and you're back up and running!

  1. 1

    Switching to a device of a different brand? First, delete the eSIM profile from your old device. Here's how to transfer your eSIM.

  2. 2

    Go to your My Viking account and request a replacement SIM card.

  3. 3

    Is your device lost or stolen? Make sure to indicate that you want to block your old SIM card right away.

  4. 4

    Install and activate your eSIM on your new device. You'll keep your number.

  • Active bundles and calling credit will expire. The new owner picks their own subscription or top-up.

  • Are you in a Viking Clan? Leave the clan first via your account settings. Want to rejoin your old clan afterwards? Just contact our helpdesk.

  • Your payment method will be unlinked and won't be transferred.

  • You cannot transfer your SIM card to a minor.

  • The new owner won't receive a new SIM card. So make sure to hand over your SIM card yourself. :-)

Want someone else to manage your SIM card with you, without them becoming the owner? Invite them as a guest user via the product settings in My Viking.

A Mobile Vikings account isn't required. However, they do need to confirm the invitation sent by email.