Sony E list a boombox for SE phones - No power/batteries, just an acoustic box the size of small football you drop your mobile into to make it sound better when you're outside, on the beach etc
I got one with my SE - didn't see the use at the time and flogged it on Ebay
Play my mobile everyday in the shower and I'm thinking this would be the perfect answer to get nicer, louder sound (also stop it getting damp)
I dont supose it matters which brand of mobile it is providing it physically fits inside but I'm wondering whether anyone heard of a blackberry boombox?
