Black+White is a New Zealand mobile virtual network operator which uses Vodafone New Zealand's GSM (and UMTS networks, where available). Their handsets are compatible with the Vodafone network and some may also be compatible with Spark's network. The handsets are similar to Vodafone's handset range but are sold at different prices. Although they operate on Vodafone's network, Black+White use their own mobile numbers with the 028 prefix at the beginning of the mobile number.