Telemarketing calls are a major annoyance in Switzerland since years. Some of the Telcos came up with their own proprietary solutions while others haven't come up with solutions at all.
For mobile phones however one can simply take an app based approach independent of the provider.
During the last years the:
app has proven to be a valuable companion. Not only does it block a list of around 25k telemarketing numbers it also does look up known business numbers and displays the company name for these so that you know who is trying to call you. The app is also free of charge.
Note: On iOS this keeps your numbers private "Incoming calls are never sent to third-party developers." - Apple.
Blocking telemarketing numbers on iOS
Blocking telemarketing numbers is actually quite easy and it takes a mere 5 minutes to set up:
- Download the local.ch app from the appstore.
- Go to Settings -> Phone -> Call Blocking & Identification.
3. Allow the local.ch for "Call Blocking & Identification
4. Open the local.ch app and select "More" in the lower right corner. Then select "Call Identification & Blocking".
5. Check that the settings are as below.
Enjoy the silence
Known telemarketing numbers are now blocked reliably in the background. You'll find a notification on your iPhone once one has been blocked.
Other than that the local.ch app comes with the benefit that for known business numbers (a lot) the company name is displayed during the call notification giving you the choice whether to take the call or not.
From time to time it is required to open the app and let it update the list. It'll notify you when this is required.
Now enjoy the silence!