3GSM It's small, it's boring and won't turn any heads - but it probably spells the end of the road for Skype, Vonage and any other hopeful independent VoIP companies. It's Nokia's 6136 phone, which allows you to make calls over your home or office Wi-Fi network, as well as on a regular cellular network. UMA, or unlicensed mobile access, is the mobile operators' answer to the threat of VoIP - and now it's reality. The Register