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A slightly unusual scene unfolded Friday at some Apple Inc. stores around the world, where the normal lines of camped-out shoppers eager to buy the latest iPhone were replaced in certain locations by smaller throngs who had preordered the largely sold-out phone.

The big question, whose answer could take time to become clear, is whether these fans' launch-day zeal will ultimately stem declining sales of the company's flagship smartphone.

Analysts and investors have long looked at opening-weekend sales as a gauge of enthusiasm for the smartphone.

At an Apple store in downtown Sydney where sales began Friday, 16-year-old high-school student Marcus Barsoum was at the front of the line. He said his sister held his spot over the previous days so he could go to school and take exams. He was looking forward to the iPhone 7's water resistance and improved camera features.

"I'm a die-hard Apple fan," he said, shortly before getting a new phone in matte black. "Basically, I love Apple. I love the iPhone. I love the experience."

At the Beijing Apple store in Sanlitun, most of the people who had arrived early Friday morning had preordered a phone online.

Wang Tianxiang, 23, said the Apple China preorder site was overloaded during the day earlier this week, but he managed to get his order in by refreshing the website repeatedly at 2 a.m. He decided to switch to an iPhone for the first time from his Chinese-designed Oneplus smartphone.

"iPhones are more reliable and the interface is better," he said.

In Japan, more than 200 people lined up on Friday morning in front of Apple stores in Ginza and Omotesando, two of Tokyo's ritziest shopping districts. Japan's three major mobile phone carriers—NTT DoCoMo Inc., KDDI Corp. and SoftBank Group Corp.'s local unit—said they were seeing the highest number of orders since they started selling iPhones.

Initial excitement doesn't necessarily translate into bigger sales, however. Initial iPhone 6s and 6s Plus orders exceeded those from the prior year, though sales declined in the past two quarters. Apple doesn't specify sales by model.

For the first time, Apple this year isn't planning to report first-weekend sales, calling the numbers irrelevant since it knows the iPhone 7 will sell out. Apple already signaled that it wouldn't be able to meet demand when customers start walking through the doors Friday. It said the iPhone 7 in shiny "jet black"—its newest finish—and the larger iPhone 7 Plus in all colors, sold out during preorders.

Adding to the prelaunch hype, T-Mobile US Inc. and Sprint Corp. earlier this week suggested strong consumer interest, though without providing specific numbers.

"Nobody does product launches better than Apple—we know the phones will sell out. They always sell out," said Rob Handfield, a professor of supply-chain management at North Carolina State University. "What we don't know is whether or not the hype and demand will last."

Even though Apple is a consumer-product veteran run by a logistics expert, it perennially comes up short in meeting initial iPhone demand. Knowing how much supply to produce for highly coveted new products, like an iPhone with a new color, is tough, said John Haber, chief executive at the consulting firm Spend Management Experts and a former UPS executive who spent a decade working in corporate strategy and finance.

Still, Apple has been selling the iPhone for nearly 10 years. And creating buzz with the appearance of customers hungry to get their hands on an item in short supply is a tactic straight from marketing textbooks.

"They're happy not meeting demand this weekend," Mr. Haber said. "This is a common tactic for companies that want to turn selling a new product into what are essentially events—Apple devices, Air Jordans, Harry Potter books, it's all the same tactic to generate interest."

Such temporary shortfalls generally don't hurt total sales of a new device, as Apple's supply in the past has caught up with demand by the time it really counts, in time for the winter holiday rush.

Apple declined to comment on its supply chain and launch strategy.

Megumi Fujikawa contributed to this article.

Write to Nathan Olivarez-Giles at Nathan.Olivarez-giles@wsj.com, Eva Dou at eva.dou@wsj.com and Mike Cherney at mike.cherney@wsj.com

(END) Dow Jones Newswires

September 16, 2016 04:15 ET (08:15 GMT)

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