Mobile via VoIP (eliminates roaming charges)

PhoneWorld VoIP subscribers may also take advantage of calling from any Swiss mobile via the internet. This is the lowest cost of making a mobile call from/to anywhere in the world as long as the mobile is in a WLAN/Wi-Fi environment. A landline VoIP connection with PhoneWorld is required for this service (exception: TV and Cable installations).

Call the World with a Mobile App

PhoneWorld is providing an "IPCall Mobile" application which can be downloaded on your Swiss mobile phone (Swisscom, Sunrise, Salt, TalkTalk, etc.).  The new app provides you with the opportunity to call domestic and worldwide at the same low VoIP landline rates. Further, with a PhoneWorld VoIP connection the IPCall Mobile app allows you to make calls from anywhere in the world and benefit from local Swiss pricing.  There is no charge for VoIP calls between network members, whether using landline or mobile phones.


IPCall IPCall on an iPhone

All incoming calls to your landline phone will also be received on your mobile via the app. In a larger office environment this also means you have to link your DID number (direct inward dial) to your mobile phone number. See below how to set up an IPCall application.

How to get a PhoneWorld mobile IPCall app:

Your first step to get an IPCall app onto your smartphone

The mobile application for home, at the office or on the move:
With our IPCall application, any call to your landline will ring through to your mobile, wherever you are. You can call at the calling rates of your landline. Your recipient will see your landline phone number when you call from the application.

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Specifically, how can one set up the IPCall application?

  1. Send an email with your name and VoIP phone number to
  2. In return, PhoneWorld will send you by email (or post) a QR code.
    QR = quick response code.
  3. Take your smartphone to GOOGLE and put Nexphone IP call app into the search (there are versions for Iphone and Android)
  4. Download the appropriate app on to your smartphone (IPCall app)
  5. Open the IPCall app and hold it against the QR Code on your PC screen
  6. The QR code will install automatically and configure your smartphone with your VoIP number (usually your landline VoIP number)

You are ready to make your first call.


  • A QR code can only be used once. Ask for a new code if needed. (VoIP number required)
  • When your mobile is outside a WLAN/WIFI area, and you are calling via the IPCall app, your call will automatically be directed to the 3G/4G networks.
  • Since data rates are substantially below normal voice rates, you may want to consider doing all mobile calls via this app.
  • Files or images cannot be sent with the IPCall app.

In summary, PhoneWorld’s IPCall service is essentially an extension of your home or office line. Make and receive calls from anywhere in the world using this app.

IP calling is the way to go. It is very cost effective. It eliminates all roaming charges. You can even record your conversations.



Application - Business

Authorization form to transfer and port your current landline to PhoneWorld VoIP...
(VoIP Application: English - French).
Please complete and sign this form, then scan and email to Upon receipt, PhoneWorld will contact you to establish technical requirements (adaptation to VoIP).


VoIP for Private Residences/Home Offices

Residences and home offices are equally affected by the deactivation of analog/ISDN lines toward the end of 2017. A landline VoIP connection with PhoneWorld is required for this service (exception: TV and Cable installations).

Application - Residential/Home Offices

Corporate VoIP sign-up form

Authorization form to transfer and port your current landline to PhoneWorld VoIP.
Please complete and sign this form, then scan and email to PhoneWord will provide an IPCall app upon receipt of the application form.

Why using IPcall mobile cannot be compared to social media calls via Skype, Whatsapp, Viber etc.

  1. Apart from generally superior voice quality, an IP Mobile caller can phone FROM his mobile anywhere in the world, and can be reached ANYWHERE IN THE WORLD under the same number (ie a CH landline number) – in case of no Wi-Fi the 3G/4G networks kick in automatically.

    The IPcall mobile template can actually be used for all mobile calls, irrespective of the provider. This provides great flexibility and cost advantages whilst saving whenever you are in a Wi-Fi area. When no “Wi-Fi” available, calls are channeled via 3G/4G . Data calls are lower cost than normal voice calls – even for calls within Switzerland.
  2. Calls via social media apps can simply not be compared to standard telephony as provided by PhoneWorld IP call mobile.
  3. Calls via social media apps may have a security issue.
    Owners(like Microsoft, Google, Facebook) can hack your data and nobody really knows what they do with it.

How to reduce cell phone radiation exposure
While IPcalls via WiFi produce hardly any radiation, the IP call app can also be used as a regular mobile through 3G/4G when not in a WiFi environment. Consequently, in those cases similar radiation impact exists. Read 15 Ways to Minimize Cell Phone Radiation Exposure.