"Fragmentation means that the platform is divided into multiple incompatible versions."
You are describing only one aspect/axes of fragmentation: Operating System fragmentation. To really have a discussion of Android's fragmentation you have to take into account the entire mobile ecosystem. You must consider the fragmentation across 5 axes:
- User Interface
- Device
- Operating System
- Marketplace
- Service
FWIW, I wrote a piece that explains this taxonomy:
You are describing only one aspect/axes of fragmentation: Operating System fragmentation. To really have a discussion of Android's fragmentation you have to take into account the entire mobile ecosystem. You must consider the fragmentation across 5 axes:
- User Interface
- Device
- Operating System
- Marketplace
- Service
FWIW, I wrote a piece that explains this taxonomy:
http://ceklog.kindel.com/2012/01/14/fragmentation-is-not-the...