 Brazilian telecoms firm Algar Telecom SA has joined efforts with U.S. fund Digital Colony to make a bid for the mobile unit of bankrupt carrier Oi SA, local newspaper Valor Economico said on Tuesday, citing two unnamed sources. The bid competes with at least one other offer jointly presented by the countrys major telecoms operators: TIM Participacoes S, Telefonica Brasil SA and America Movils Claro, the media outlet added. The three carriers proposed the minimum price of 15 billion reais 2.81 billion set up by Oi for its mobile unit and certain conditions that could imply a discount, the sources told Valor. 