Open source mobile phone detection.
http://detectmobilebrowsers.com/
JavaScript Libraries and Functions · Compatibility
Get access to data on 193,593 websites that are Detect Mobile Browsers Customers. We know of 78,467 live websites using Detect Mobile Browsers and an additional 115,126 sites that used Detect Mobile Browsers historically and 38,127 websites in the United States.
Get a list of 193,593 websites using Detect Mobile Browsers which includes location information, hosting data, contact details, 78,467 currently live websites and an additional 109,531 domains that redirect to sites in this list. 115,126 sites that used this technology previously and 38,127 websites in the United States currently using Detect Mobile Browsers.