Open source mobile phone detection.
http://detectmobilebrowsers.com/
JavaScript Libraries and Functions · Compatibility
Get access to data on 212,181 websites that are Detect Mobile Browsers Customers. We know of 91,763 live websites using Detect Mobile Browsers and an additional 120,418 sites that used Detect Mobile Browsers historically and 42,176 websites in the United States.
Get a list of 212,181 websites using Detect Mobile Browsers which includes location information, hosting data, contact details, 91,763 currently live websites and an additional 109,894 domains that redirect to sites in this list. 120,418 sites that used this technology previously and 42,176 websites in the United States currently using Detect Mobile Browsers.