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Flash is pretty much dead. You should use gif or html banners.

You're right. Some sponsors unfortunately don't adapt too well. Means we're better off creating banners ourselves.

yeah, soon all networks will have to look for alternatives. To me, GIF banners are the most simple and compatible with everything.

Html5 is also a good alternative.

If you check $_SERVER['HTTP_REFERER'], you can get the device. It is human readable, but you do need to look:

20160101002707, /Coach-Karl.php, 98.180.178.34, Coach-Karl.com - Naked Muscle on Home DVD and eBooks, ^ Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36 |98.180.178.34,US,United States,NV,Nevada,Las Vegas,89169,America/Los_Angeles,36.17,-115.14,839

20160101204451, /index.php, 66.249.64.31, , ^ Mozilla/5.0 (iPhone; CPU iPhone OS 8_3 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12F70 Safari/600.1.4 (compatible; Googlebot/2.1; +Googlebot - Search Console Help) |66.249.64.31,US,United States,CA,California,Mountain View,94043,America/Los_Angeles,37.42,-122.06,807

20160107134147, /PolandJocks/ThePolandJocks.php, 86.204.176.36, The Poland Jocks - Naked Muscle from Waersaw on Home DVD and eBooks, ^ Mozilla/5.0 (Mobile; Windows Phone 8.1; Android 4.0; ARM; Trident/7.0; Touch; rv:11.0; IEMobile/11.0; Microsoft; Lumia 435; Orange) like iPhone OS 7_0_3 Mac OS X AppleWebKit/537 (KHTML, like Gecko) Mobile Safari/537 |86.204.176.36,FR,France,D,Bourgogne,Fixin,21220,E urope/Paris,47.25,4.97,0