3G Shutdown in Switzerland: What You Need to Check and Do Now
Since April 7, 2026, Swisscom's 3G network is history. Anyone still operating devices that rely exclusively on 3G now faces a problem: no connection. This affects not only older smartphones, but also alarm systems, routers, medical devices, and other connected devices. This guide shows you which devices are specifically affected, how to check compatibility, and what options you have now.
Why Was 3G Shut Down?
The 3G network has barely been developed in Switzerland for years. The vast majority of mobile data traffic already runs over 4G (LTE) and increasingly over 5G. Shutting down 3G allows Swisscom to use the freed-up frequencies for more modern network technologies – which ultimately means better coverage and higher speeds for everyone.
Sunrise and Salt have also shut down their 3G networks in Switzerland or are planning to do so in the same timeframe. The 3G era is thus definitively over in Switzerland.
Which Devices Are Affected?
Not every older device is automatically affected. What matters is whether the device supports only 3G (UMTS/HSPA) or whether it also supports 4G/5G.
Smartphones and Tablets
Smartphones released before 2013 often don't support 4G. But some budget entry-level models from later years were also sold without LTE support. Typical affected devices:
- Smartphones with release year before 2013
- Older Nokia, Samsung, or Sony models without LTE designation
- Budget prepaid phones without 4G support
Alarm Systems and Security Systems
This is the area where the 3G shutdown is most often overlooked. Many alarm systems installed before 2018 use a built-in 3G module to communicate with the alarm center. If this module doesn't support 4G, the system has been silent since the shutdown – it no longer sends alarms in an emergency.
What you need to do: Contact your security service provider or the system manufacturer and explicitly ask about the installed communication module.
Mobile Routers and Hotspots
Older mobile WLAN routers (so-called MiFi devices) that you might still use for travel or as a backup solution can also be affected. Check the technical specifications of the device.
IoT Devices and Smart Home Systems
Connected devices like remote surveillance cameras, meters, vehicle trackers, or industrial sensors often use older mobile modules. If you have such devices in use, you need to check the specifications or contact the manufacturer.
Medical Devices
Some older emergency call systems or home telemetry devices communicate via 3G. Here, urgency is particularly important – check this immediately with your provider or doctor.
Checklist: How to Check Your Device
Go through these steps in order:
- Step 1: Check the network standard. Look in your smartphone's settings under "Mobile" or "Network". If you see options for 4G or LTE, your device is basically compatible.
- Step 2: Look up technical specifications. Search for the exact model designation of your device and check on the manufacturer's website which network standards are supported. Pay attention to terms like "LTE", "4G", "Band 3", "Band 7", or "Band 20".
- Step 3: Test the connection. If you're unsure: call someone or open a website. If it works, your device is compatible. No signal or permanent "No Network"? Then your device is probably affected.
- Step 4: Contact the manufacturer or provider. For alarm systems, IoT devices, or specialized equipment: call the manufacturer or installer directly. Explain the problem and ask about an update or replacement of the communication module.
- Step 5: For Swisscom customers. Swisscom has proactively informed affected customers. If you've received such a notification, act immediately.
Your Options: Upgrade, Switch, or Continue Using
Option 1: Buy a New Smartphone
If your phone doesn't support 4G, a device change is the simplest solution. Current budget smartphones with 4G support are available from around CHF 100–150. You don't need a new SIM card – your existing card will continue to work as long as your plan supports 4G (which is the case for virtually all current Swiss plans).
Option 2: Replace the Communication Module
For alarm systems and IoT devices, it's often not the entire device that's outdated, but only the built-in mobile module. A technician can replace this module with a 4G-capable module in many cases. Costs vary depending on the device and provider – expect CHF 100–300 for the replacement.
Option 3: Use WLAN as an Alternative
Some alarm systems and smart home devices can alternatively communicate via WLAN or a wired internet connection. Check whether your device supports this option before replacing it.
Option 4: Switch Plan and Device Together
If you're already thinking about changing your mobile plan, now is a good time. On zufriedenmit.ch, you can compare current Swiss mobile offers and find plans that match your usage behavior.
Frequently Asked Questions
Can I Still Use My Old Phone for Calls and SMS?
Only if it supports 2G (GSM). In Switzerland, the 2G network is currently still in operation – but with a foreseeable end date. Pure voice calls and SMS work over 2G, but mobile internet doesn't. For reliable everyday use, a device with 4G support is clearly recommended.
What Happens If My Alarm System Has No Signal?
It will continue to function locally – sirens and local detectors will trigger. But remote notification and connection to the alarm center are interrupted. In an emergency, no alarm is sent to the security service or your phone. This is a serious security risk that you should fix immediately.
Do I Need to Change My Plan?
In most cases, no. Current mobile plans in Switzerland automatically support 4G and 5G. You only need a compatible device. But check your plan anyway: very old contracts could theoretically still be limited to 3G – a look at your plan details or a quick call to your provider will clarify.
Are Sunrise and Salt Customers Also Affected?
Yes. The 3G shutdown affects all three major Swiss network operators. The problem lies with the device, not the provider. Switching providers won't solve the problem if the device itself doesn't support 4G.
Action Recommendation
The 3G shutdown is complete. Anyone who doesn't yet have a 4G-capable device should not wait any longer:
- Check all devices that contain a SIM card or mobile module – not just your smartphone.
- Contact manufacturers or installers for alarm systems, cameras, and IoT devices.
- Replace or upgrade as soon as you've identified an affected device.
- Compare offers if you're also reconsidering your mobile plan – on zufriedenmit.ch, you'll find an independent overview of all current Swiss offers.
Those who act now avoid security gaps and ensure that all devices remain reliably connected.
