Set up call filter & block numbers
Protect yourself from unwanted calls and dubious advertising on your smartphone or landline. Simply use the free call filter from Swisscom or block individual numbers.
Manage Callfilter
The free call filter blocks unwanted calls and dubious advertising on your smartphone or landline.
Warning message: ‘Warning: suspected spam’
The call filter blocks calls that are highly likely to be unwanted marketing or scam calls. For calls that appear suspicious but cannot be clearly classified as spam, the message ‘Caution: Suspected spam’ will now be displayed. The call will still go through, so you can decide for yourself whether to answer it.
This feature is free of charge and is automatically enabled when your Callfilter is switched on. It cannot be enabled or disabled separately.
Block number
You can also block individual numbers. These are then automatically blocked. A total of up to 200 blocked numbers are possible, which you can unblock at any time.
Block number
- Open My Swisscom
Go to My Swisscom and log in. - Telephony > Select call filter
Go to the telephony settings and select "Call filter". - Block number
Under "Manually block and unblock numbers" you can enter and block the phone number.
How do I block calls directly on my landline?
Immediately after an unsolicited call, key in *00# on the telephone’s numeric keypad. The number of the last incoming call will be added to your block list.
Can I block calls from an entire canton, country or company?
If you want to block unsolicited calls from an entire canton, country or company, key in the first identical digits of the number, followed by an asterisk. For example: +4131*
Blocking value-added services and chargeable numbers
Block chargeable 0900 numbers and value-added services. Once blocked, you will no longer be able to call these numbers yourself.
If you block all value-added services, you will no longer be able to pay your mobile bill using Swisscom Pay/SMS short numbers.
FAQs
How reliable is the Callfilter?
The Swisscom Callfilter blocks undesired telemarketing calls according to up-to-date blocking lists. The blocking list is compiled to the best of our knowledge. However, it is still possible that some undesired telemarketing calls will get through. In exceptional circumstances it is also possible that some normal calls may be blocked.
How can I block anonymous calls?
In My Swisscom you can set that calls with a suppressed number (anonymous calls) are automatically rejected.
Where can I report fraudulent callers?
The quickest way to do this is to use the report form for unfair advertising on our website.
Notification service for unfair advertising
How does the call filter work?
The Swisscom Callfilter blocks undesired telemarketing calls according to up-to-date blocking lists. The blocking list is compiled to the best of our knowledge. However, it is still possible that some undesired telemarketing calls will get through.
How can I protect myself from fraudulent calls?
What does the message “Warning: suspected spam” mean?
The Swisscom Call Filter detects and blocks unwanted calls using various protection mechanisms, criteria and intelligent analysis. The detection system is continuously updated and improved. Nevertheless, the odd unwanted call may still get through. The message is displayed when a call is identified as a possible spam call.
The Call Filter will continue to block calls that are highly likely to be spam straight away.
On which devices is the message “Warning: suspected spam” displayed?
The Swisscom Call Filter detects and blocks unwanted calls using various protective mechanisms, criteria and intelligent analysis. The detection system is continuously updated and improved. Nevertheless, the odd unwanted call may still get through. The warning is displayed when a call is identified as a potential spam call.
The Call Filter continues to block calls that are very likely to be spam directly.
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