WA came out iPhone exclusive (then later on extended the offering to BB). iPhone was hugely popular in North America. BB, on the other hand, is hugely popular

WA came out iPhone exclusive (then later on extended the offering to BB). iPhone was hugely popular in North America. BB, on the other hand, is hugely popular in Asia (and probably Europe...?) that consists of 3 most populous countries: China, India, Indonesia... guess who uses WA the most...? Support for other platforms came out very late...