In the first 24 hours of preordering, Apple iPhone 6 and iPhone 6 Plus orders hit a record 4 million, the kind of demand that Apple's biggest competitor Samsung likely envies, despite its recent advertisements mocking the tech giant, according to one expert.
That compares with 2 million iPhone 5 orders made within 24 hours after preordering began, according to the company.
Read MoreiWant: More than 4 million set new iPhone preorder record
"I can tell you that Samsung wishes that they had that sort of demand," said Mark Spoonauer, editor in chief of LaptopMag.com.
Speculation before Apple's iPhone 6 launch event last week was for the new phones to be made with more durable sapphire glass screens, a feature that Apple didn't deliver, but the new iPhones seem to have enough selling points that consumers are still clamoring for the phones.
Read MoreWant an iPhone Friday? This is your best hope
"With the iPhone 6 and 6 Plus, people are getting a bigger screen, a faster processor, more enhanced camera and I think that puts a lot of pressure on Samsung ... Apple has two devices that go up against the Galaxy S5 and the Note 4, and on paper, Samsung has better specs and better features, but there's something about Apple's ecosystem that keeps people coming back for more," Spoonauer said.
The first iPhone 6 smartphones will make it into consumers' hands this Friday, but since of the phones, preorders for the iPhone 6 Plus won't be filled until later this fall, until November if you're ordering online, Spoonauer noted.
Read More Flexible screen tech a shot in the arm for Apple?
"Between the two devices, the iPhone 6 Plus seems to be the most exciting of the two because not only do you get the bigger screen, but you also have optical image stabilization in the camera and you have a really cool dual-pane effect when you're looking at apps that take advantage of a larger and sharper display," Spoonauer said.
The list price for a 4.7-inch iPhone 6 starts at $199 and the iPhone 6 Plus starts at $299.
—By CNBC's Althea Chang
