Brazilian mobile phone company TIM Participacoes SA (TSU) late Tuesday reported a first quarter net loss of 144 million Brazilian reals ($67 million), compared with a loss of BRL125.5 million registered in the year earlier period.

The company attributed its net loss in the period to an increase in amortizations and taxes.

First-quarter net revenue totaled BRL3.01 billion, up from BRL2.99 billion in the same period the year before, according to the company's earnings release.

The Brazilian unit of Telecom Italia SpA (TI) said its earnings before interest, taxes, depreciation and amortization, or Ebitda, was up 14.4% on the year to BRL609.4 million. Ebitda margin was 20.2%, up from 17.8% in the same quarter last year.

TIM ended the first quarter with 36.1 million clients, up 11% from the same period of 2008.

-By Rogerio Jelmayer, Dow Jones Newswires; 5511-2847-4521; rogerio.jelmayer@dowjones.com