Houten, The Netherlands, 04 August 2011 - More than four out of ten (42%) Dutch consumers were using a smartphone in the second quarter of 2011, an increase of more than 30 percent compared to the third quarter of 2010 when less than a third of consumers used smartphones (30%).Similar to a half year ago, smartphone users are most often customers of T-Mobile and Vodafone, followed at a distance by Hi and KPN. However Hi, together with T-Mobile, has the highest penetration of smartphone users in its customer base, according to Telecompaper's second report an Dutch smartphone users. The report 'Dutch Smartphone User 2011-Q2' is based on an online survey of 19,200 Dutch consumers during Q2 2011 and compares the data with the previous three quarters.