DGAP-News:Telefónica Deutschland expands wholesale partnerships: Lebara switches to the O₂ network

DGAP-News: Telefónica Deutschland Holding AG / Key word(s): Contract Telefónica Deutschland expands wholesale partnerships: Lebara switches to the O₂ network 03.11.2021 / 07:25 The issuer is solely responsible for the content of this announcement.

MUNICH, 3 November 2021 Telefónica Deutschland expands wholesale partnerships: Lebara switches to the O₂ network Telefónica Deutschland is expanding its wholesale partnerships with Lebara as a prominent new addition. The international mobile provider Lebara has been present in the German market since 2010 as an established provider of mobile voice and data services for 'global citizens'. Going forward, Lebara will realise its mobile business via Telefónica Deutschland's network infrastructure. The switch to the O₂ network is planned for 2022. Further information Telefónica Deutschland Holding AG Investor Relations Georg-Brauchle-Ring 50 80992 München Christian Kern, Director Investor Relations; (m) +49 179 9000 208 Marion Polzer, CIRO, Head of Investor Relations; (m) +49 176 7290 1221 Eugen Albrecht, CIRO, Senior Investor Relations Officer; (m) +49 176 3147 5260 (t) +49 89 2442 1010 ir-deutschland@telefonica.com www.telefonica.de/investor-relations Disclaimer: This document contains statements that constitute forward-looking statements and expectations about Telefónica Deutschland Holding AG (in the following "the Company" or "Telefónica Deutschland") that reflect the current views and assumptions of Telefónica Deutschland's management with respect to future events, including financial projections and estimates and their underlying assumptions, statements regarding plans, objectives and expectations which may refer, among others, to the intent, belief or current prospects of the customer base, estimates regarding, among others, future growth in the different business lines and the global business, market share, financial results and other aspects of the activity and situation relating to the Company. Forward-looking statements are based on current plans, estimates and projections. The forward-looking statements in this document can be identified, in some instances, by the use of words such as "expects", "anticipates", "intends", "believes", and similar language or the negative thereof or by forward-looking nature of discussions of strategy, plans or intentions. Such forward-looking statements, by their nature, are not guarantees of future performance and are subject to risks and uncertainties, most of which are difficult to predict and generally beyond Telefónica Deutschland's control and other important factors that could cause actual developments or results to materially differ from those expressed in or implied by the Company's forward-looking statements. These risks and uncertainties include those discussed or identified in fuller disclosure documents filed by Telefónica Deutschland with the relevant Securities Markets Regulators, and in particular, with the German Federal Financial Supervisory Authority (Bundesanstalt für Finanzdienstleistungsaufsicht - BaFin). The Company offers no assurance that its expectations or targets will be achieved. Analysts and investors, and any other person or entity that may need to take decisions, or prepare or release opinions about the shares / securities issued by the Company, are cautioned not to place undue reliance on those forward-looking statements, which speak only as of the date of this document. Past performance cannot be relied upon as a guide to future performance. 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03.11.2021 Dissemination of a Corporate News, transmitted by DGAP - a service of EQS Group AG. The issuer is solely responsible for the content of this announcement. The DGAP Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. Archive at www.dgap.de

Language: English Company: Telefónica Deutschland Holding AG Georg-Brauchle-Ring 50 80992 München Germany Phone: +49 (0)89 24 42 0 Internet: www.telefonica.de ISIN: DE000A1J5RX9 WKN: A1J5RX Listed: Regulated Market in Frankfurt (Prime Standard); Regulated Unofficial Market in Berlin, Dusseldorf, Hamburg, Munich, Stuttgart, Tradegate Exchange EQS News ID: 1245593 MDAX TecDAX End of News DGAP News Service

1245593 03.11.2021