The Apple iOS and Android smartphone operating systems are the most desired upgrades, with their first and second place rankings varying by mobile phone user demographic, according to new data from The Nielsen Company. 1/3 of Likely Smartphone Upgraders Desire Apple iOS Among all likely US smartphone upgraders from August-October 2010, nearly one-third (30%) desire to upgrade [...]<img src="http://feeds.feedburner.com/~r/marketingcharts/~4/etImmtbfqZI" height="1" width="1"/>