"To have a smartphone" means to possess or own a mobile device that is capable of performing various functions such as making calls, sending messages, accessing the internet, and running applications (apps). Full definition
This dating service is strictly online and doesn't have a smartphone app for easy mobile use. (toptenreviews.com)
It's a great feature to have, and more headphones are adding this feature as well, so that you aren't stuck with having your smartphone with you all the time. (androidheadlines.com)
But doesn't everyone have a smartphone on them at all times? (goodereader.com)