Possible reasons why, from BGR:
1. Android’s market share is strongest in relatively lower-income countries
2. Many people in those countries lack credit cards and Google has been very slow to offer carrier billing
3. Android phones average $250-$300 where iPhone average $600 – people who choose to spend the extra money are sending a signal about their intents. That is, we don’t know what the ARPU for a Galaxy S5 user is, but it’s probably very similar to an iPhone user – but Galaxy S5 users are a small minority of Android users
4. Apple offers a distinctly different proposition to Android: perhaps the people who are attracted to that proposition are just more likely to spend money – that is, maybe iPhone users do spend more than GS5 users.
5. Finally, this can become circular: if developers believe that Android users do not pay, then their behavior will be affected – they may offer a free ad-supported app instead of a paid app, or have a lower price. And if they decide not to support Android or support it second, then their users will gravitate to iPhone first, which becomes self-fulfilling. You can see this clearly on Android tablets – magazine apps have low use on Android so are slow to support Android, so users who want magazine apps don’t buy Android tablets.
