How Apple's iPhone 4S preorders stack up historically

Apple landed 1 million preorders in a day for its iPhone 4S in what is its best device launch ever.

However, it's worth going through history to see how the preorders stack up with previous devices to figure out if there was a Steve Jobs effect driving orders. Jobs passed away last week a day after Apple unveiled the iPhone 4S.

Also: iPhone 4S pre-orders tally 1 million in 24 hours

Here's how Apple's iPhone 4S stacks up to previous years.

2011: Mac OS X Lion had 1 million downloads in first day of availability.

Surprisingly, there wasn't a formal announcement with iPad 2 launch orders and sales.

2010: Apple's iPhone 4 delivered 600,000 preorders, but that launch was marred by glitches. Apple said: "It was the largest number of pre-orders Apple has ever taken in a single day and was far higher than we anticipated, resulting in many order and approval system malfunctions. Many customers were turned away or abandoned the process in frustration."

Apple sold 300,000 iPads on the first day. Those sales included preorders.

2009: Apple sold more than 1 million iPhone 3GS devices in three days.

2008: Apple sold 1 million iPhone 3Gs in a weekend in 2008.

2007: Apple sold 2 million copies of Mac OS X Leopard in its first weekend.

Apple sold 1 million iPhones, but took 74 days to get there.