• Adjust on a monthly basis
  • Reliable 5G network ofKPN
  • 35x the best per Consumers Association
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My Simyo
My Simyo

Sim Only

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Simyo eSIM

Simyo eSIM

At Simyo, you can now opt for an eSIM. eSIM is a digital SIM card. eSIM functions the same as a plastic SIM card but is built into your phone.

Order a Sim Only eSIM

Prepaid

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35 times the best according to the Consumers Association

35 times the best according to the Consumers Association

35 times, the Consumers Association has rated us the best phone provider in the Netherlands.

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Phones

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Subscriptions with phone

Subscriptions with phone

Is it time for a new phone? Great news: you can now get a new phone with your Simyo subscription. Applies to both new and loyal Simyo customers.

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eSIM

Order Sim Only with eSIM Order Prepaid with eSIM
Simyo eSIM

Simyo eSIM

At Simyo, you can now opt for an eSIM. eSIM is a digital SIM card. eSIM functions the same as a plastic SIM card but is built into your phone.

Order Sim Only eSIM now

KPN & Simyo Complete

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Up to 10 GB extra per month for free with Simyo Complete

Up to 10 GB extra per month for free with Simyo Complete

Do you live at an address with KPN fixed internet? Then you'll receive up to 10 GB extra per month for free.

Order Sim Only with Complete

Service

Your first invoice explained

Your first invoice explained

Don't worry, that's because of the subscription fees you pay in advance and possible connection fees. Those are one-time extra costs.

More details on your first invoice
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I can't make calls

Can't make calls Error message while calling Call forwarding Set up voicemail Abroad FAQs

I can’t make or receive calls. What can I do?

Can’t make calls or receive them? Try these troubleshooting steps:

1

Your phone and Mijn Simyo

Turn your phone off and turn it back on after five minutes. Still no luck? Then check your usage, credit or invoices in Mijn Simyo .

2

PIN code and number transfer

Is something wrong with your PIN code? Then check the SIM card page . Or has your phone number recently been transferred? Read more on our Number Transfer page .

3

Replacement SIM card

If you just received a replacement SIM card, you can’t make calls right away. First activate it in Mijn Simyo .

4

Signal and coverage

Check your signal strength at the top or side of your screen. No bars? Then manually select the KPN mobile network in your phone’s settings. Our Phone Guide shows you how.

Can't make calls abroad Calling works, but mobile data doesn't

Error when calling

Do you hear an error message when making calls? Here’s how to find out what’s going on.

Sim card blocked for administrative reasons

Sim card blocked for administrative reasons

This error message means your sim card is blocked. Check the status of your SIM card easily via Mijn Simyo > Settings > SIM card. Is it blocked? That may be due to unpaid invoices or insufficient prepaid credit . If you have Prepaid , your SIM card might also be blocked after not using it for too long .

Country codes or service numbers

Country codes or service numbers

When calling from abroad, always place the correct country code in front of the phone number. Example: you want to call 0612345678. From abroad, you dial 0031612345678 or +31612345678.

You can’t use this number

You can’t use this number

Want to call abroad or to service numbers? Make sure to enable these options via Mijn Simyo > 'Instellingen' (Settings) > 'Internet en bellen' (Internet and calls). Then restart your phone right away. Calling a foreign number? Don’t forget to add the country code before the phone number.

Phone numbers and call forwarding

Simyo can't forward calls for you. You can set this up yourself on your phone. Note: you can only forward to a Dutch number. Forwarding to foreign numbers is not possible.

How to forward all calls

Do you want to forward all incoming calls? Enter the following code from your phone’s home screen:

4G / 5G

  • Activate: *21*[phone number][green call button]
  • Cancel: #21[green call button]

2G

  • Activate: **21*[phone number]#[green call button]
  • Cancel: ##21#[green call button]

How to forward calls when not answered

Do you only want to forward calls when you don’t pick up? Use this code:

4G / 5G
  • Activate: *61*[phone number][green call button]
  • Cancel: #61[green call button]
2G
  • Activate: **61*[phone number]#[green call button]
  • Cancel: ##61#[green call button]

How to forward calls when there is no network

Do you want to forward calls only if you have no mobile network connection? Enter:

4G / 5G
  • Activate: *62*[phone number][green call button]
  • Cancel: #62[green call button]
2G
  • Activate: **62*[phone number]#[groene call button]
  • Cancel: ##62#[green call button]

How to forward calls when you’re already in a call

Want to forward calls only when you’re on the phone? Enter:

4G / 5G
  • Activate: *67*[phone number][green call button]
  • Cancel: #67[green call button]
2G
  • Activate: **67*[phone number]#[green call button]
  • Cancel: ##67#[green call button]
Set up voicemail

Set up voicemail

Not available for a while? Turn your voicemail on! We’ve created a dedicated page with everything you need to know about voicemail at Simyo. From setting up to deactivating, and from listening to deleting.

Stel je voicemail in

I can't make calls abroad. What now?

Here are the most common solutions:

1

Check your settings

In Mijn Simyo or the Mijn Simyo app , go to 'Instellingen' (Settings) > 'Internet en bellen' (Internet and calls), and enable 'Bellen in en naar het buitenland' (Calling abroad). Then restart your device so your SIM card can connect to the local network.

2

Search for a network manually

Is the option enabled but still no luck? Then choose a network yourself in your phone’s settings. Want to know how on your phone? Check our Phone Guide for step-by-step help.

3

Restart your phone

By restarting your phone, your SIM card reconnects to the mobile network.

4

Use a country code

When calling from abroad, it's important to add the correct country code in front of a phone number. Example: 0612345678 becomes 0031612345678 or +31612345678.

5

Tried everything, but still no signal?

Please contact our customer service team.

Note: Want to call our customer service from abroad? Call +31202003007 or 0031202003007. The rate depends on the roaming zone you are in.

View roaming zones

Question?
Answer

I can’t call certain people

If you can’t reach specific contacts, they may not be available.

It’s also possible you accidentally blocked that phone number. Check this in your contacts list. Depending on whether you have an Android phone or iPhone, this setting can be in different places. Check your phone's manual if needed.

Some phones let you only call certain numbers. This is called “fixed dialing numbers” (FDN). Turn this off to make calls to everyone.

Still not solved? We’re here to help. Get in touch with us via your preferred channel.

I can’t call 0800 or 0900 numbers

If you can’t make outgoing calls to 0800 or 0900 numbers, check in Mijn Simyo under Settings whether “Calling service numbers” is enabled.

On your invoice, you’ll see costs for 0900 calls split into two:

  • Traffic costs (minutes within your bundle, no extra cost)
  • Service costs (set by the company you’re calling)

For the Dutch police number (0900-8844), you pay the local rate.

Entertainment numbers
To protect you from high costs, calling entertainment numbers like 0909 or 0906 is blocked by default. Want access? Please contact our customer service .

How does Wi-Fi calling work?

With Simyo, you can also make calls over Wi-Fi. This is called VoWiFi (Voice over Wi-Fi). You call using a Wi-Fi network, at home or work, for example. Wi-Fi calling doesn’t use MBs from your mobile data bundle. Just like 4G calling, the minutes are taken from your call bundle or credit. Do you have Prepaid with an internet bundle? Then the minutes come from your credit. Just like you’re used to.

Learn more about Wi-Fi calling .