SAO PAULO, Aug 7 (Reuters) - Brazilian telecoms firm Oi SA
 OIBR4.SA  on Friday agreed to grant preferential status to a
joint takeover proposal by TIM Participacoes  TIMP3.SA ,
Telefonica Brasil  VIVT4.SA  and America Movil's Claro  AMXL.MX 
for Oi's mobile assets, two sources familiar with the matter
said.
    The agreement would give the companies, which operate the
country's top cellular phone service providers, the exclusive
right to match any other higher bid that other parties could
make later for the assets.
    In July, the three telecoms presented a 16.5 billion reais
bid for the assets.

 (Reporting by Carolina Mandl; Editing by Christian Plumb)
 ((carolina.mandl@thomsonreuters.com; +55 11 5644 7703; +55 11
97116-3806;))