There are several ways to call Switzerland from Hungary. The most common are calling cards and using an internet-based voice-over-IP service.
Calling cards can be bought at most convenience stores and offer rates that are cheaper than those of most mobile providers. To use a calling card, first dial the access number, which is usually toll-free. Then, enter the PIN number and the phone number of the person you are calling in Switzerland.
Another option is to use an internet-based voice-over-IP service. These services allow you to make calls over the internet at a fraction of the cost of traditional phone services. To use one of these services, you first need to sign up for an account and then download the app or software. Once you have installed the software, you can start making calls.