Yes, U.S. smartphone users are showrooming for better deals online, but they are also doing many other things to help them decide whether to make a purchase in-store, a study finds. Many U.S. smartphone usersare price-sensitive shoppers, using their devices while in stores to see if they can get a better deal elsewhere, particularly online. But many smartphone owners use their devices to do deeper research on products while in the aisles, not necessarily looking for a better deal but simply looking to inform their buying decisions, decisions that may very well lead to making a purchase in stores