https://www.cnet.com/news/british-carrier-vodafone-found-hidden-backdoors-in-huawei-equipment-says-report/

Both Vodafone and Huawei told Bloomberg these vulnerabilities were addressed in 2011 and 2012.

However, the outlet reported that the vulnerabilities remained after that and could also be found in Vodafone's UK, German, Spanish and Portuguese businesses, citing anonymous sources. Vodafone apparently kept using Huawei equipment because it was competitively priced.