Apparently the world’s smallest Android platform smartphone which isn’t much bigger than a credit card, and with a weight of just 88 grams, the new Sony Ericsson XPERIA X10 Mini has now gone on sale in the United Kingdom.

According to an article over on itproportal by James Cullimore, the Sony Ericsson XPERIA X10 Mini is available free on a 2 year contract for £15 per month with Carphone Warehouse in Ireland, and if you wish to own the Sony Ericsson XPERIA X10 Mini on PAYG it will cost £199.95.

The Sony Ericsson XPERIA X10 Mini sports a 2.55 inch capacitive touch screen, 5 megapixel camera with LED Flash, modified Timescape and Mediascape versions, social networking services, GPS, A-GPS, WiFi and several exclusive applications.

The Sony Ericsson XPERIA X10 Mini is available from Carphone Warehouse, O2 UK, 3UK and Vodafone and is available in a choice of 3 colour backs, being silver, black and pink with mobile apps available from both the Android market and Sony Ericsson’s PlayNow portal.