Telecom intends to counter Vodafone's HSDPA with an upgrade to EV-DO, called Revision A. This provides 3Mbit/s downloads and 1.8Mbit/s uploads theoretically, and also gives Telecom video calling for the first time, a feature Vodafone has had since last year on its 3G service. Again, customers will need new handsets and data cards for Telecom's EV-DO Rev A, with pricing for these and the upgraded service unknown at this stage. Availability is yet to be announced.