Set Up and Use Multi Device

Enable Multi Device on your Apple Watch or other devices with a SIM or eSIM. This lets you use your additional devices with your existing mobile plan.

How It Works
Activate Multi Device
Costs
Change Additional Device
FAQs

How it works

With Multi Device, you can use up to 5 additional devices, such as tablets, laptops, smartwatches, and other accessories like your smartphone. All devices are linked to the same number. Everything runs on a single mobile plan.

Multi Device options(opens in new tab)
See Multi Device-compatible devices(opens in new tab)
What plan do I have?(opens in new tab)

Is Multi Device available for all subscriptions?

Multi Device is available for

blue Mobile S, M, L, and XL
inOne mobile premium
basic Mobile XS, S, and M
blue Kids Mobile

Is Multi Device suitable for multiple people?

No. Multi Device is intended for one person. All devices can be reached at the same phone number.

Activate Multi Device

Select the appropriate device and follow the instructions.

Device with a SIM card

Order your Multi Device SIM card for free in My Swisscom. We’ll deliver it to your home.

Open My Swisscom.
Click on “Connect Additional Device.”
Select the appropriate option:
a. Multi Device is included in your subscription:
Click on “Order SIM Card.”
b. Multi Device is not included in your plan:
Select a Multi Device option and complete the order.
Wait for the SIM card to arrive.
Scan the QR code on the SIM card to link it to your mobile subscription.
Insert the SIM card into your device.

You’ll receive a text message on your primary device as soon as the Multi Device option is active.

Devices with eSIM

Open My Swisscom on your main device.
Go to Devices & SIM in the menu.
Select your swisscom mobile plan.
Add the Multi Device option to your plan.
Under SIM Type, select eSIM.
Complete the order.
The eSIM profile for your additional device will be created.

You’ll then find it under Devices & SIM in My Swisscom. Scan the QR code displayed with your additional device. Your device will then be connected and ready to use. You’ll receive a text message on your primary device as soon as the Multi Device option is active.

Apple Watch

Prepare

Your Apple Watch is paired with your iPhone.
The latest version of iOS is installed on your iPhone.
You have your Swisscom login information handy.

Activate

On your iPhone, open the Watch app.
Tap Cellular.
Tap Configure Cellular.
Follow the instructions.

For Multi Device, select "For myself."

Tip: Activate a device code on your Apple Watch. This will help protect your data if you lose it.
Note: You can also use Apple Watch (Series 4 and later) with blue Kids Watch or inOne mobile care. In that case, you’ll have a separate phone number. Follow the instructions above and select “For a family member.”

Samsung Watch

Prepare:

Samsung smartphone running Android OS 5.0 or later.
To activate the service on smartphones from other manufacturers, follow the instructions for devices with eSIM.
Have your Swisscom login information handy.

Activate:

Open the Samsung Galaxy Wearable app on your smartphone.
Select the smartwatch you want to pair.
Follow the instructions in the app.
Sign in with your Swisscom login.
Select "Add Additional Device."

You'll receive a text message on your primary device as soon as the Multi Device option is active.
Tip: Set up a device code on your smartwatch. This will help protect your data if you lose it.

Laptop with eSIM

Order in My Swisscom

Open My Swisscom on your primary device.
Go to Devices & SIM in the menu.
Select your mobile plan.
Add the Multi Device option to your plan.
Under SIM Type, select the eSIM option.
Complete the order.

The eSIM profile for your additional device will be created. You can then find it under Devices & SIM in My Swisscom.

Setting Up an eSIM on Your Laptop

Open Settings on your laptop.
Go to Network & Internet.
Open Mobile Data.
Select eSIM Profiles, then Add Profile.
Select "Enter an activation code."
Scan the QR code from My Swisscom.

You’ll receive a text message on your primary device as soon as the Multi Device option is active.

Costs

Starting in June 2026, Multi Device will be available as a standard option. You’ll pay CHF 10.– per additional device per month. The monthly fee applies as soon as you activate Multi Device.
Options & Plans(opens in new tab)

With which subscription plan is Multi Device free?

The blue Mobile L plan include Multi Device for up to 4 additional devices.
The inOne mobile premium and blue Mobile XL plans includes Multi Device for up to 5 additional devices.

Alternative Option

The Connect Pack remains available. It allows you to use up to 4 additional devices at Premium Speed for CHF 20.– per month.

What are the costs when using your phone abroad (roaming)?

Multi Device also works abroad. The exception is the Apple Watch for family members.

You can find the costs in the rate plan overview(opens in new tab). The included roaming units apply to all your devices.

How can I keep costs under control?

You can view your current costs and included allowances at any time in
My Swisscom and in the Cockpit. Usage is displayed per mobile plan.It is not displayed per device.

Change additional device

Remove the Multi Device SIM card and simply insert it into another device.For devices with an eSIM, select “Replace Device” in the Cockpit(opens in new tab) and follow the instructions.

Does the SIM card not fit in the new device?

How do I remove my smartwatch from Multi Device?

Open the Swisscom Cockpit(opens in new tab)
Remove your smartwatch as an additional device.

If you’re giving your smartwatch to someone else, we also recommend that you follow these steps.

Apple Watch

Open the Watch app on your iPhone.
Tap My Watch and select your smartwatch.
Tap Info, then tap Unpair Apple Watch.

Samsung Watch

Open Settings on your smartwatch.
Tap General.
Tap Reset.

FAQs

Can I use the smartwatch abroad as well (roaming)?

Yes. The Apple Watch and Samsung Galaxy Watch support international roaming. Here’s how to use your smartwatch while traveling abroad.

Apple Watch
International roaming is available starting with watchOS 9.1. It is supported on the Apple Watch Series 5, Apple Watch SE, Apple Watch Ultra, and newer models.

Wichtig
To make calls while abroad, VoLTE roaming must be enabled on your plan.

Note on SMS while abroad
Some devices do not receive roaming SMS messages. As a result, you may not receive an SMS with pricing information. You can find the costs for using your service abroad in the rate plan overview(opens in new tab).

Can I share Multi Device with other people?

No. Multi Device is intended for personal use by one person. All devices can be reached using the same phone number. Anyone with access to your additional device can use your services both in Switzerland and abroad. That person may also have access to the Swisscom Cockpit, where they can change settings for your devices.
Open Swisscom Cockpit(opens in new tab)

Can I use WhatsApp and iMessage on multiple devices at the same time?

Swisscom has no control over third-party offers.

WhatsApp
WhatsApp(opens in new tab) currently supports using one number on multiple devices. As of December 2024.

iMessage und SMS on multiple devices
Set this up in Apple Settings(opens in new tab).

Why doesn't the Multi Device SIM card have a SIM PIN?

The SIM PIN is disabled by default on every Multi Device SIM card. Many additional devices do not have a display—for example, trackers or cameras—so you cannot enter a PIN on them. You can enable the SIM PIN at any time in your device’s settings. To do this, the SIM card must be inserted into the device. You’ll find the SIM PIN on the SIM card holder.

Switch devices or cancel Multi Device

How can I change the additional device?

You have two options. It depends on whether you're using a SIM card or an eSIM.
Device with a SIM card
Remove the Multi Device SIM card from the secondary device. Insert it into your new secondary device. If the SIM card doesn’t fit in the new device, use one of these options:

Order a replacement SIM(opens in new tab)
Micro-SIM Adapter (CHF 4.90)
Nano-SIM Adapter Set (CHF 4.90)

Device with eSIM
If you switch from an eSIM to another secondary device, use the "Replace Device" feature in the Swisscom Cockpit. Then follow the instructions.

Switching from eSIM to SIM Card

If you're switching from a device with an eSIM to an additional device with a SIM card, you'll need a Multi Device SIM. Start the switch in the Swisscom Cockpit by selecting "Replace Device." Then activate the new SIM card.

How do I cancel Multi Device?

There is a minimum subscription period for Multi Device.

After activation, you can cancel Multi Device for the first time effective at the end of the following month.
Once the minimum subscription period has expired, you can cancel Multi Device at any time.
If you deactivate the service, we will charge the monthly fee on a pro-rata basis.
If you cancel your main subscription, Multi Device will be automatically canceled as well.

Where can I add “calls” function?

You manage the "Phone Calls" feature in the Swisscom Cockpit. To do this, open the settings for the corresponding accessory. You can access the Cockpit from your main device and your additional devices. You can view your current costs and included units in My Swisscom and in the Swisscom Cockpit. The display shows information for your entire swisscom mobile subscription. Usage is not shown on a per-device basis.

Open My Swisscom(opens in new tab)
Open Swisscom Cockpit(opens in new tab)

Multi Device vs. inOne mobile data

What is the difference between Multi Device and inOne mobile data?

	Multi Device	inOne mobile data
Available with:	inOne (SME) mobile go, premium, XS–XL and Swiss mobile flat	As separate subscription
In Switzerland
Surfing	Yes, unlimited	Yes, with 30 GB/mth Then speed reduction with no additional costs
Phone calls	Yes (using the number of the main subscription)	No
SMS	Only on master device	Yes
Abroad
Surfing	As per subscription included units	With data packages
Phone calls	As per subscription included units	No
SMS	Only on the main device	Yes
Charges
Monthly charges	From 3/mth Included with the Connect pack, inOne mobile premium, L and XL	49.–/mth