O2 Mobile Unlimited Max by Telefónica - 5G flat for heavy users

O2 Mobile Unlimited Max comes with unlimited 5G data at up to 500 Mbit/s for customers who stream, game and work on the move. This product is driving the price of Telefónica S.A. stock (ISIN ES0178430E18).

O2 Mobile Unlimited Max greets you with a bright blue SIM card on the table, still smelling faintly of freshly opened cardboard as the activation SMS buzzes in your hand. Within minutes, the phone jumps to 5G and video streams start without a hitch.

Flat data for heavy users

O2 Mobile Unlimited Max is one of the top all-you-can-surf tariffs in the German O2 portfolio, positioned for people who burn through gigabytes every month. It offers unlimited data volume in the German O2 network with a maximum download speed of up to 500 Mbit/s and upload speeds up to 50 Mbit/s.

The tariff includes unlimited calls and SMS to all German networks, making it a single-contract solution for most users. On the official O2 site, the standard price for O2 Mobile Unlimited Max is listed at 59.99 Euro per month, with regular promotional discounts via online booking campaigns.

5G coverage and real-world use

On its German website, O2 highlights nationwide 4G coverage and a fast-growing 5G footprint that already reaches a large majority of the population in urban areas. Users in cities like Berlin, Munich or Hamburg typically see 5G icons throughout most of their daily routes, while rural coverage is still expanding.

In independent checks from trade media, measured download rates in the O2 5G network often fall below the 500 Mbit/s peak, but still land in a comfortable double- or low triple-digit Mbit/s range under real-world conditions. For UHD streaming, cloud gaming and large file uploads, that bandwidth is more than sufficient for single users.

Roaming, options and bundles

Telefónica includes EU roaming in O2 Mobile Unlimited Max, but the genuinely unlimited data volume only applies in Germany. For roaming in other EU countries, the tariff follows O2's fair-use policy, which caps high-speed roaming data at a defined threshold before slower speeds or surcharges apply.

Customers can combine O2 Mobile Unlimited Max with the O2 My Handy hardware financing model or choose one of several current 5G smartphones as bundle, often with monthly price reductions during promotions. On the tariff page, Telefónica showcases bundles with brands like Samsung and Xiaomi to underline the 5G use case.

Management focus and role in the portfolio

Telefónica Deutschland CEO Markus Haas repeatedly points to unlimited and high-volume data tariffs as a pillar of the company's growth strategy, especially after the major network expansion in recent years. In presentations, management emphasizes that heavy data users are more loyal and accept higher monthly fees than occasional surfers.

Within the German O2 Mobile line-up, Unlimited Max sits above the O2 Mobile M and L plans with fixed data buckets, targeting customers who want to stop thinking about consumption altogether. For Telefónica, this creates a clear price ladder that helps upsell existing customers as their usage increases over time.

Stock context and investor angle

For Telefónica S.A., the German business with the O2 brand is a significant earnings contributor alongside its activities in Spain and Latin America. Unlimited 5G tariffs like O2 Mobile Unlimited Max are positioned as premium revenue drivers in a market where average data consumption continues to rise. On Xetra, Telefónica S.A. stock (ISIN ES0178430E18) reacts to broader group performance rather than individual tariffs, but the German mobile portfolio remains part of the growth story communicated to investors.

Key facts: O2 Mobile Unlimited Max

• Product: O2 Mobile Unlimited Max
• Manufacturer: Telefónica S.A.
• Category: Lifestyle/Consumer
• Market launch: As part of the O2 Mobile portfolio relaunch in 2023
• MSRP / Price: 59.99 Euro per month (standard list price in Germany)
• Availability: Available via O2 online shop, hotline and O2 stores in Germany
• Target group: Heavy mobile data users, streamers, commuters and people who tether laptops frequently
• Highlight / USP: Unlimited 5G data volume in the German O2 network with up to 500 Mbit/s download