(Telecompaper) Telefonica has signed partnership agreements with Latin American mobile operator NII Holdings, which operates under the Nextel brand. Under the terms of the deal, Telefonica will provide Nextel's subsidiaries in Brazil and Mexico with nationwide voice and data coverage services on Telefonica's 3G wireless networks. When implemented, the agreements will expand the areas in which Nextel customers using 3G services in Brazil and Mexico can access voice and data services. Both companies plan to work closely to implement the agreements as soon as possible. Telefonica and Nextel's subsidiaries will continue to manage their spectrum and network assets separately to provide competing services.