Apple’s iPad led Thanksgiving and Black Friday online buying by Philip Elmer-DeWitt @FortuneMagazine November 25, 2012, 1:03 PM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons Click to enlarge. Source: IBM Digital Analytics Benchmark FORTUNE — Apple AAPL devices loomed larger than expected in IBM’s IBM final report on this year’s surge of online buying Thanksgiving Day and Black Friday. Online sales were up both days — 17.4% and 20.7%, respectively — from 2011. But the biggest surge came from mobile devices — and in particular from purchases made on an iPad or iPhone. The highlights of IBM Digital Analytics Benchmark‘s Apple-related findings: The Mobile Factor: Mobile buying soared, with 24% of U.S. consumers using a mobile device to visit a retailer’s site, up from 14.3% in 2011. Actual sales from mobile devices hit 16.3%, up from 9.8% in 2011. The Apple Factor: The iPad generated more traffic than any other tablet or smartphone, accounting for nearly 10% of online shopping. This was followed by the iPhone at 8.7% and all Google GOOG Android devices combined at only 5.5%. The iPad Factor: The iPad dominated tablet traffic at 88.3% followed by the Barnes and Noble BKS Nook at 3.1%, Amazon AMZN Kindle at 2.4% and the Samsung Galaxy at 1.8%. That only 5.5% of sales were made on Android devices was a bit of a shock given their rapid gains in market share in 2012. According to IDC, Android claimed 75% of the smartphones sold in the third quarter to Apple’s 15%. Below: An IBM graphic summarizing its full findings. Click twice to enlarge.