The document discusses how apps have changed smartphone usage and driven data growth. Key points:
1) Smartphone adoption in Europe is rising rapidly, especially among younger users, and apps are driving increased data usage on smartphones.
2) In the Netherlands, Vodafone saw a clear "iPhone effect" as iPhone users consumed 6-12 MB of data per day on average, compared to 0.75 MB for older devices.
3) App usage insights found that 31% of users are "socializers" who use apps for social media, while 12% are "addicts" who use apps multiple times daily.
4) Future outlook expects smartphone penetration to grow above 50% and