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by kalid 5029 days ago
Take a look at http://opensignalmaps.com/reports/fragmentation.php

Android manufacturers & carriers have little incentive to get you to upgrade [Apple sidesteps them and delivers updates directly]. Do you want to target a several-years-old platform to guarantee the most access?

Screen sizes are also a challenge. iOS (iPhone + iPad) has 4 different ones to choose from. Android has... a lot more than that.

Fluid layouts usually don't work that well -- awkward spacing here, awkward wrapping there. Notice how many web frameworks use fixed-width columns (like Twitter Bootstrap).