Pew : Three-quarters of U.S. smartphone owners use location-based apps . The survey also found that the majority of Americans are not aware of how their smartphones track them. Older users , those with older phones might not be using maps . Higher-income users are less likely to use place-based check-ins like Foursquare .
Pew : Three-quarters of U.S. smartphone owners use location-based apps . That 's an increase , but leaves 25 % shying away from one of mobile 's prime features . Older users , those with older phones might not be using maps . Higher-income users are less likely to use place-based check-ins like Foursquare .