Many doubted how successful a large screen iPhone would be, claiming it was simply too big.

However, if the latest sales survey is to be believed, Apple's iPhone 6 plus has already been a monster hit in the US- and is outselling every other 'phablet' by a huge amount.

It has also sparked a huge rise in the sales of the large screen handsets with a display 5.5inches or larger.

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Despite being on the market for just over a month of the three months ending with October 2014, the iPhone 6 Plus captured 41% of 'phablet' sales—sales of smartphones with a screen size of 5.5 inches and larger.

ANDROID SALES The figures also revealed the top selling Android handsets. Samsung's Galaxy S5 remained the best-selling model with 22% of sales while the Galaxy S4 continued to show its longevity, maintaining second place with a share of 12%. Advertisement

Phablet sales represented 10% of overall smartphone sales, up from 2% for the same period in 2013.

Despite being on the market for just over a month of the three months ending with October 2014, the iPhone 6 Plus captured 41% of 'phablet' sales—sales of smartphones with a screen size of 5.5 inches and larger.

Phablet sales represented 10% of overall smartphone sales, up from 2% for the same period in 2013.

At the point of sale, when asked what drove their choice of smartphones, the study by Kantar Worldpanel found 58% of those surveyed who bought an iPhone 6 Plus said screen size was the primary reason for choosing their device.

The ability to connect to a 4G/LTE network was the second most important reason cited by both buyer groups.

Although selling for just over a month, the iPhone 6, with 33% market share, became the best-selling model among iOS devices for the three months ending in October 2014.

The study by Kantar Worldpanel found 58% of those surveyed who bought an iPhone 6 Plus said screen size was the primary reason for choosing their device.

The iPhone 5s was the second best-selling iPhone model with 26%, and the iPhone 5c was third with 18%.

The iPhone 6 Plus captured 10% of iOS sales.

In the Android camp, the Galaxy S5 remained the best-selling model with 22% of sales while the Galaxy S4 continued to show its longevity, maintaining second place with a share of 12%.

Of the iPhone 6 and iPhone 6 Plus buyers, 85% were repeat iOS buyers and 9% churned from Android.