A new study done by Kantar Worldpanel, covering the big five European markets on the occasion of the Samsung Galaxy S5’s first full month of sales, and found that it was unable to surpass Apple’s 10-month-old iPhone 5s or even the iPhone 5c in sales. It did, however, come in third place — with further survey results suggesting that the larger screen size of the S5 has had some modest success in attracting Apple users. In the US, the Galaxy S5 displaced the iPhone 5c to become the second best-selling smartphone in May….