NTT Docomo Inc. says it will cut mobile phone charges by up to 40 percent in June amid the government's call on carriers to lower service fees.

Docomo said Monday it will introduce two basic service plans, one with a monthly fee of ¥5,980 for unlimited data and the other charging ¥1,980 for limited data.

The company is looking to counter low-cost wireless service providers UQ Mobile and Ymobile launched by domestic rivals KDDI Corp. and SoftBank Corp. respectively. Docomo does not have a budget service brand.