Bildquellen:  Vorschaubilder Startseite  - Flickr.com (v.l.n.r):
- TechStage, Phones, Phones & Phones, CC BY-ND 2.0
- George Thomas, Android-Vs-iOS, CC BY 2.0
- mroach, Some SIM cards, CC BY-SA 2.0
- Jon Fingas, United Nations of smartphone operating systems, CC BY-ND 2.0