Thomas Smith, 32, of Boston, tries out the video on his new iPhone after standing in line outside the Apple Store in the Georgetown neighborhood of Washington, on Thursday, June 24, 2010. "This is going to be the talk of the office today," says Smith. (AP Photo/Jacquelyn Martin)
Here's a hands-on test to see how much faster the iPhone 4 is compared with its predecessor, the iPhone 3GS. Take a look at the video below, and you'll see that launching apps takes about the same on both models, only slightly faster on the iPhone 4.
Multitasking, more accurately known as fast app switching, happens at about the same speed, too. The most welcome change is the iPhone's new faster Wi-Fi, 802.11n, compared with 802.11g on the iPhone 3GS. In our case, the Wi-Fi speed difference was profound. Your mileage may vary.
(iPhone 3GS is on the left, iPhone 4 on the right)