The European Commission endorsed on 31 January a measure proposed by the Spanish national telecom regulator ‘Comisión del Mercado de las telecomunicaciones’ (CMT) to regulate the market for mobile access and call origination in Spain, but also asked the Spanish regulator to keep the market development under close review. As a result of this measure, so called Mobile Virtual Network Operators (MVNO) will be granted access to the networks of the three Spanish mobile telephony operators Telefónica, Vodafone and Amena. In the future, MVNOs will be able to offer mobile telephony services to their own retail customers and under their own brand name. MVNOs are operators that offer mobile telephony services using network infrastructure leased from other mobile telephony operators. Experience from other Member States has shown that the entry of MVNOs can boost competition with tangible benefits for consumers in terms of lower prices. The Commission’s decision is based on Article 7 of the EU Framework Directive for electronic communications (2002/21/EC), whereby the Commission ensures that there is a consistent application by national regulatory authorities of competition law principles in this sector.