The handset market has not been easy for everyone: former leaders Nokia and Sony Ericsson are having a hard time posting good numbers, although, Nokia has managed to earn $380M (-65%) while Sony Ericsson was posting a loss of $299M.
Nokia has had difficulties in developed countries as the coolness of its brand is eroding. The company has engaged in a wide range of initiatives (OS, store, handsets) to change course, but this will likely take at least a couple of years to form.
Sony Ericsson is in deep trouble: it does not have a good way of taking the lead in terms of software or handset design.