Try http://www.argos.co.uk/static/Product/partNumber/2875408.htm SIM-free so you can just put your existing SIM inside if you wish. (The phone is "unlocked" and not tied to any network). Without wishing to give too lengthy an explanation, smartphones seem to come with 2 sizes of memory... just enough (around half a gig) or around 4 gig. Some come with Android 2.something and some with 4.something. This phone (in link above) seems to offer a very good compromise at a reasonable price. If you wish to pay a bit more, go ahead and get the Sony Experia that you mentioned which should do an equally good job, but make sure it is either unlocked or else locked to the network of the phone company that you currently use. Hope I am not too late to help.