Hundred percent line means that a platform has not gained or lost any market share YoY. Fifty percent means a platform has lost half of its market share, and two hundred percent means a platform has doubled its market share.
This kind of graph can reveal some extra information in addition to looking only bare market share numbers.
Platform
- Symbian is in decline everywhere. Not a surprise.
- RIM is losing in many countries, but also gaining in Brazil.
- iOS is mainly going down, except in US and Brazil.
- Windows is gaining, except in Spain.
- Android is growing, except in the US.
- Bada has a huge spike in Brazil.
Country
- In the US, iOS is growing strongly after iPhone 5 release.
- Windows started practically from zero, but it is gaining everywhere. Spain is an exception, where the reason most probably is the lack of low-cost models. This means Windows is sold and pushed globally.
- Android is the king.
- In Brazil, Every platform has gained at the cost of Symbian. Even Bada has gained there significantly.
Other comments
It is no surprise Android is growing fast, because low-cost Android models have practically replaced feature phones in most countries.
Nokia is pushing Windows Phone globally, but it is a well-known fact that WP sales are seriously behind Symbian 1-2 years ago.
Apple should do something, or a decline will follow. US is an exceptional market with strong carrier handset subsidies, and success in the US can not be repeated in other countries.