What are the key statistics about global mobile traffic and adoption?

Mobile devices passed a major internet milestone in 2016: they generated more traffic than desktop devices for the first time, at 51.3%.

These figures are snapshot statistics from the 2026 learning material. Treat them as evidence for the scale of mobile networking, not as timeless constants.

Key numbers to know:

Traffic dominance:

• In 2016, mobile internet traffic exceeded desktop for the first time at 51.3%.
• In Switzerland (2024), wireless and mobile devices account for 77% of all IP traffic: 126 Exabytes per month (that's 126 billion billion bytes). Source: ComCom (Swiss Federal Communications Commission).

Global reach:

• 7.4 billion mobile users worldwide in 2025, covering 89% of the world's population.
• Northern Europe leads internet penetration at 97.7% of the population.

IoT explosion:

• IoT devices are projected to grow from 15.9 billion (2023) to over 39 billion (2033), more than doubling in a decade.
• 4G and 5G are driving a disproportionate share of this mobile data growth.

Apple's scale:

• Apple sells approximately 600,000 iPhones per day, roughly 7 devices per second.

Why this matters for security: Every one of those billions of devices is a potential attack surface. The shift to mobile means that the majority of sensitive data (banking, health, communications) now travels over wireless links, making mobile network security a critical concern.

Go deeper:

• Internet of things (Wikipedia) — the device-count explosion behind the IoT figures, and why each connected sensor widens the attack surface.