Portugal Telecom will release its 2010 first quarter results on Thursday, 22 April 2010*, before the Euronext Lisbon market opening.

Contacts:
Nuno Vieira, Investor Relations Director
nuno.t.vieira@telecom.pt
Tel.: +351.21.500.1701
Fax: +351.21.500.0800

* This date may be subject to change.