Polish telco Netia has reported that its net loss quadrupled in the second quarter ended 30 June 2007, due to growing costs from its mobile phone network, P4, which operates under the brand name Play. The company said it lost PLN51.1 million in the second quarter, up from PLN12.8 million in the same period a year earlier. The company said sales in the second quarter remained almost unchanged at PLN203.6 million compared to PLN201.1 million a year ago. Netia has invested heavily in Poland’s fourth mobile network, and at the end of June P4 claimed 172,000 customers, a figure which had risen to over 300,000 by early August. Netia also claimed 133,978 broadband customers, of which 88,468 were connected via its own DSL or cable networks, 40,770 were connected via bitstream access to TP Group’s network and 3,516 were connected to its own WiMAX network.