16GB M2 card works on Sony Ericsson K550i20/03/09 Permalink
And I'm guessing it will work on phones around the K550i range. I was thinking about the maximum card storage that phone manufacturers state for each phone and I believe it's more to do with how stable it is with certain capacity cards. I'm sure that SE don't state 16GB is the maximum and that it's 4GB or something but believe me, 16GB works.
When you look at the size of the M2 card - smaller than a finger-nail - you can't actually believe that you can fit 16GB on it, and they're on about a 32GB coming out soon as well. Jeeeez - my 1st 3GB hard-drive was the size of a brick!