T-Mobile is expanding its 4G network in the Netherlands, launching in the cities of Zaandam, Weesp and Mijdrecht, Telecompaper reports Wednesday. The operator is also upgrading the radio network to support LTE in the 1,800 MHz band, where it holds 2x30 MHz. The upgrade has been completed in major cities, and the rest of Randstad will now follow. T-Mobile also announced that it can provide 4G services to 400,000 customers.