Nokia is testing real-world handoffs between GSM and Wi-Fi with its 6136 UMA handset in Oulu, Finland, according to the company. The trial will last for 2 months and involves practical use by 50 families (necessary as the goal is to see how well UMA hands over from residential Wi-Fi to other networks).

Oulu also presents an interesting test-bed as it began deployment last year of municipal hotspots via the Pan Oulu project, which provides citizens free Wi-Fi in various parts of the city.