probably one of the last android smartphones that do not need to splurge with a large display. me was the smallness and compactness most important. the operability of the entire display with one hand was important for me! Who can do without some power and sometimes has one or two seconds until one app open and the somewhat small storage for apps not fully exploits, gets a super compact smartphone that his service can still perform well. battery life is fully in order (probably due to the somewhat weaker performance). even at home in the WLAN, I can not clear mehrverbauch notice (what other smartphones empties the battery sometimes much faster). Update of from 2.3 to 4.0 available from Sony. 4.0 slows the non smartphone.