With OneNumber you can share your monthly plan across various SIM cards using the same mobile number!
One Number

What you need to know

OneNumber customer can have up to 4 SIM cards with the same number. First one would be the Primary one and the rest three would be Secondary ones.

There is no need to switch between SIM cards as all four of them are activated simultaneously.

OneNumber customer can make outgoing calls, send SMS and use mobile internet using any device/SIM card.

Incoming calls are delivered to all devices simultaneously.

Incoming SMS are delivered to the Primary SIM exclusively.

Roaming experience in available with OneNumber as long as your device has roaming capabilities built in.

How do I get OneNumber

One Number is available for all monthly plan customers (RED / FREEDOM / BLACK / Classic) on top of plan's relevant charges.

In case VoLTE is not activated yet on your device you first need to do that and then choose OneNumber.

One Number
Multisim customers who wish to transfer to OneNumber should:

Terminate existing service

Activate VoLTE

Activate OneNumber

  Charge (VAT included)
Connection fee €5,95 / card
1st Card Subscription €5,95 / month
2nd Card Subscription €5,95 / month
3rd Card Subscription €5,95 / month

Apple Watch & Galaxy Watch do not require a separate order placement for OneNumber service. OneNumber is automatically activated via the "On device activation" method followed to activate eSIM.