Freshtel says its VoIP service trial on four Nokia handsets, the N95, the E65, E51 and N81, is the simplest in the market as it uses the customers existing number. The phones uses Symbian 60 functionality.

The trial was certainly easy to set up, using a SMS to request the application download and integrating with the users SMS inbox and phonebook with no set up.

When connected to WiFi, the service offers the normal free calls and texts between online users. However, it also gives verbal and on-screen confirmation if the service is free when the phone book is uses in a normal way.

Whether consumers are sufficiently interested in VoIP to test this service remains to be seen, but if big-name branding comes in then the marketing push might be enough, especially if WiFi enabled handsets become more ubiquitous in the market.