The lack of memory expansion on the Xperia S might be a problem (or frustration) to some, but there IS a way to add more memory if you're, say, wanting to watch a film on it (perhaps connected to your HD TV).
It's NOT likely to be particularly convenient when you're out and about, although it might be useful if you need to get data from another memory card (e.g. a digital camera) using a card reader - as long as it can be powered via the USB port. I could, for example, access photos from my DSLR and upload them to Dropbox via the phone without having to copy anything to the phone first.
I bought one here;
GENUINE NOKIA USB OTG CA-157 CABLE ADAPTER FOR N8 C6-01: Amazon.co.uk: Electronics
It cost me
It's NOT likely to be particularly convenient when you're out and about, although it might be useful if you need to get data from another memory card (e.g. a digital camera) using a card reader - as long as it can be powered via the USB port. I could, for example, access photos from my DSLR and upload them to Dropbox via the phone without having to copy anything to the phone first.
I bought one here;
GENUINE NOKIA USB OTG CA-157 CABLE ADAPTER FOR N8 C6-01: Amazon.co.uk: Electronics
It cost me