Originally Posted by "applephil
the sales are still insanly high but they are declining...
but could it also be possible that ios is evolving too slowly and people getting bored with it?
You would generally compare respective quarters to the previous year as there are seasonal buying trends and people hold off buying if a new model is coming. Q4 2012 ended in September just a couple of week after the iPhone 5 launch so you won't see the impact of it until Q1 2013 in January.
I reckon they will announce over 50 million iPhones sold in Q1 2013. Even if people were bored with iOS, it's not like anyone else is doing anything ground-breaking.