The main reason for shopping with your smartphone instead of a computer is that it is often closer at hand. A large number of the population never has their mobile more than an arm's length away, which makes it increasingly more common as a purchase tool.
E-commerce is experiencing strong growth with continuously increasing online sales. Throughout 2015, sales have increased every quarter and are expected to end at around 50 billion SEK. Source HUI Research
The biggest drivers of online shopping are convenience, price and supply. Three out of four customers mentioned any of these factors as reasons for their latest online purchase.