In November last year, the European Union agreed to take a tough line on 5G suppliers to reduce cybersecurity risks to next-generation mobile networks, seen as key to boosting economic growth and competitiveness.

The strategy included reducing countries' and telecoms operators' dependency on one supplier. World No. 1 telecoms equipment maker Huawei competes with Finland's Nokia and Sweden's Ericsson.

While some progress has been made, a lot of work needs to be done, the Commission said.

"Progress is urgently needed to mitigate the risk of dependency on high-risk suppliers, also with a view to reducing dependencies at (European) Union level," the EU executive said, reporting on the progress made by the 27 EU countries.

"Challenges have been identified in designing and imposing appropriate multi-vendor strategies for individual MNOs (mobile network operator) or at national level due to technical or operational difficulties," it said, citing the lack of interoperability or the size of the country as some of the problems.

In addition to Britain, France is also adopting a de facto ban on Huawei, sources told Reuters earlier this week.

The United States says the Shenzen-based company's gear could be used by China for spying, an accusation rejected by Huawei.

EU officials said phasing out high-risk suppliers and additional costs will not derail the roll out of 5G across the bloc and that Ericsson and Nokia will be able to cope with the demand.

"If you look at the situation worldwide, Nokia and Ericsson have a large part of the world market in terms of contracts signed worldwide on deployment of 5G. The two combined have certainly more than 50% to 60%, 65%. I think that two European suppliers can provide what is needed not only for Europe but also for a large part of the world," one of the officials said.

The Commission also urged 13 EU countries to adopt the foreign direct investments screening mechanism without delay, a tool which allows EU governments to intervene in cases of foreign direct investment in strategic assets, especially if state-controlled or state-financed enterprises are involved.

By Foo Yun Chee