I have my smartphone within arm's reach about 24 hours a day. I was in the market to purchase a new OtterBox case for my iPhone the other day. While I shopped for the case I wanted (and added it to a shopping cart) on my smartphone, I ended up abandoning my cart and making the purchase on my laptop.
I was in the 30% who had reservations about sending credit card data on my mobile device. The most common reason people shop on their computers is they can't get a clear image of the product, according to the UPS Pulse of the Online Shopper poll.
You will find more statistics at Statista