It was possible to walk into a store Saturday and buy an iPhone 5, but it took some hunting.

Some stores reported having Apple's newest phone available for walk-up customers, though not all versions of it. A random check of about a dozen stores indicated that most were sold out.

A Verizon store in New York City said the 32 and 64 gigabyte models, but not the 16 GB version, were available. A Sprint store in a suburb of St. Paul, Minnesota, said all but the most expensive 64 GB iPhone 5s were sold out.

"Before we were even scheduled to open, we were pretty much out," said Eric Rayburn, a worker at a Sprint store in Phoenix.

The iPhone 5 went on sale Friday, igniting intense interest around the world. Apple's website said phones bought online would ship in three to four weeks. Verizon's website said they would ship by Oct. 19.

It's hardly uncommon for supply shortages to make it difficult to get new iPhones in the first days after their release. For Apple, the iPhone introduction is the biggest revenue driver of the year. Analysts say the company will likely sell millions of phones in the first few days.

There were long lines Friday at Apple's stores in Asia, Europe and North America as customers pursued the new smartphone. Apple and the phone companies haven't provided sales figures from the first day. Apple is expected to announce early results Monday

Last year, Apple said on the Monday after the launch of the iPhone 4S that it had sold 4 million in the first three days.

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Freed reported from Minneapolis. AP Technology Writer Peter Svensson in New York contributed to this report.

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    NEW YORK, NY - SEPTEMBER 21: Customers wait on line to purchase the Apple iPhone 5 outside the Apple Fifth Avenue flagship store on the first morning it went on sale on September 21, 2012 in New York City. Customers lined up for days to purchase the hotly anticipated device which went on sale nationwide today. (Photo by Mario Tama/Getty Images)

  • US-IT-APPLE IPHONE 5

    Hazem Sayed exits the Apple store on Fifth Avenue after purchasing his new iPhone 5 on September 21, 2012 in New York. Apple's iPhone 5 hit stores around the world on Friday, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/GettyImages)

  • Hotly Anticipated iPhone 5 Goes In Sale In Stores

    NEW YORK, NY - SEPTEMBER 21: Customers wait on line to purchase the Apple iPhone 5 as other people walk past the Apple Fifth Avenue flagship store on the first morning it went on sale on September 21, 2012 in New York City. Customers lined up for days to purchase the hotly anticipated device which went on sale nationwide today. (Photo by Mario Tama/Getty Images)

  • Hotly Anticipated iPhone 5 Goes In Sale In Stores

    NEW YORK, NY - SEPTEMBER 21: Customers take photos while waiting on line to purchase the Apple iPhone 5 outside the Apple Fifth Avenue flagship store on the first morning it went on sale on September 21, 2012 in New York City. Customers lined up for days to purchase the hotly anticipated device which went on sale nationwide today. (Photo by Mario Tama/Getty Images)

  • Hotly Anticipated iPhone 5 Goes In Sale In Stores

    NEW YORK, NY - SEPTEMBER 21: Customers wait on line to purchase the Apple iPhone 5 outside the Apple Fifth Avenue flagship store on the first morning it went on sale on September 21, 2012 in New York City. Customers lined up for days to purchase the hotly anticipated device which went on sale nationwide today. (Photo by Mario Tama/Getty Images)

  • Hotly Anticipated iPhone 5 Goes In Sale In Stores

    NEW YORK, NY - SEPTEMBER 21: Nurse Angelie Mok waits on line to purchase the Apple iPhone 5 outside the Apple Fifth Avenue flagship store on the first morning it went on sale on September 21, 2012 in New York City. Customers lined up for days to purchase the hotly anticipated device which went on sale nationwide today. (Photo by Mario Tama/Getty Images)

  • Hotly Anticipated iPhone 5 Goes In Sale In Stores

    NEW YORK, NY - SEPTEMBER 21: Branden Busby poses with his new Apple iPhone 5 inside the Apple Fifth Avenue flagship store on the first morning it went on sale on September 21, 2012 in New York City. Customers lined up for days to purchase the hotly anticipated device which went on sale nationwide today. (Photo by Mario Tama/Getty Images)

  • Consumers wait in line outside the Fifth Avenue Apple store for the imminent release of the iPhone 5, Friday, Sept. 21, 2012, in New York. Hundreds of people waited in line through the early morning to be among the first to get their hands on the highly anticipated phone. (AP Photo/John Minchillo)

  • Greg Packer, 49, celebrates as he enters the Fifth Avenue Apple store for the release of the iPhone 5, Friday, Sept. 21, 2012, in New York. Hundreds of people waited in line through the early morning to be among the first to get their hands on the highly anticipated phone. (AP Photo/John Minchillo)

  • A consumer captures the celebration on his Apple products as he enters the Fifth Avenue Apple store for the release of the iPhone 5, Friday, Sept. 21, 2012, in New York. Hundreds of people waited in line through the early morning to be among the first to get their hands on the highly anticipated phone. (AP Photo/John Minchillo)

  • A clock symbol is displayed on an iPad with the new iOS 6 Friday, Sept.21, 2012 in Nauen, eastern Germany. Switzerland's national rail company is accusing Apple Inc. of stealing the iconic look of its station clocks for the iOS 6 operating system used by iPhone and iPad mobile devices. Both designs have a round clock face with black indicators except for the second hand which is red. (AP Photo/Ferdinand Ostrop)

  • Hazem Sayed, 54, the first in line to purchase the new iPhone 5, holds up his new phone in front of media outside the Fifth Avenue Apple store, Friday, Sept. 21, 2012, in New York. Hundreds of people waited in line through the early morning to be among the first to get their hands on the highly anticipated phone. (AP Photo/John Minchillo)

  • Greg Packer, 49, is cheered on as he celebrates with his newly purchased iPhone 5 in hand outside the Fifth Avenue Apple store, Friday, Sept. 21, 2012, in New York. Hundreds of people waited in line through the early morning to be among the first to get their hands on the highly anticipated phone. (AP Photo/John Minchillo)

  • Hazem Sayed, 54, the first in line to purchase the new iPhone 5, takes pictures outside the Fifth Avenue Apple store, Friday, Sept. 21, 2012, in New York. Hundreds of people waited in line through the early morning to be among the first to get their hands on the highly anticipated phone. (AP Photo/John Minchillo)

  • New iPhone goes on sale

    Britain's Taekwondo Olympic Gold Medallist, Jade Jones, becomes one of the first people in the UK to receive the new iPhone 5 at the O2 store in the Arndale Centre, Manchester.

  • GERMANY-US-IT-INTERNET-TELECOM-APPLE-IPHONE

    Customers queue to enter the Apple Store where a giant logo is displayed in the southern German city of Munich on September 21, 2012 as the iPhone 5 goes on sale. AFP PHOTO/CHRISTOF STACHE (Photo credit should read CHRISTOF STACHE/AFP/GettyImages)

  • AUSTRALIA-TECHNOLOGY-APPLE-IPHONE-PROTEST

    Francis Le holds up a placard in his mock food queue outside Apple's flagship store in Sydney on September 20, 2012, in opposition to the queue of people waiting to buy the new iPhone 5 which goes on sale in Australia on September 21. Le is calling for public support to highlight what he calls the madness of endless consumption and to contrast it with desperate people around the corner, and in other corners of the world. Le wants to highlight the disparity between those who wait overnight for unnecessary phone upgrades and those who wait for food, water and safety.” AFP PHOTO/William WEST (Photo credit should read WILLIAM WEST/AFP/GettyImages)

  • JAPAN-US-IT-TELECOM-APPLE

    Apple store staff (in blue) give out free drinks and chocolate to Apple fans queuing on the pavement for the launch of Apple's new iPhone 5 in front of an Apple Store in Tokyo on September 20, 2012. Gadget lovers have flooded Apple with pre-orders and set up camp outside the company's real-world stores to get their hands on the new-generation iPhone 5 set for release on September 21. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/GettyImages)

  • JAPAN-US-IT-TELECOM-APPLE

    Apple store staff (R-in blue) give out free drinks and chocolate to Apple fans queuing on the pavement for the launch of Apple's new iPhone 5 in front of an Apple Store in Tokyo on September 20, 2012. Gadget lovers have flooded Apple with pre-orders and set up camp outside the company's real-world stores to get their hands on the new-generation iPhone 5 set for release on September 21. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/GettyImages)

  • JAPAN-US-IT-TELECOM-APPLE

    Apple fans wait for the launch of Apple's new iPhone 5 in front of an Apple Store in Tokyo on September 20, 2012. Gadget lovers have flooded Apple with pre-orders and set up camp outside the company's real-world stores to get their hands on the new-generation iPhone 5 set for release on September 21. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/GettyImages)

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    Apple fans queue along the pavement to wait for the launch of Apple's new iPhone 5 in front of an Apple Store in Tokyo on September 20, 2012, while an iPad (R) reads '15 hours more for iPhone 5'. Gadget lovers have flooded Apple with pre-orders and set up camp outside the company's real-world stores to get their hands on the new-generation iPhone 5 set for release on September 21. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/GettyImages)

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    A man (C) resells an iPhone 5 he just bought outside the Hong Kong Apple store on September 21, 2012. A gray market for the new iPhone sprang up on the doorstep of the Apple store in Hong Kong, where resellers offered more than 50 percent above the retail price. AFP PHOTO / Philippe Lopez (Photo credit should read PHILIPPE LOPEZ/AFP/GettyImages)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    Apple Store employees cheer as customers are allowed into the shop to buy the new iPhone 5 smartphone at Covent Garden in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

  • Apple iPhone 5 Goes On Sale In Germany

    BERLIN, GERMANY - SEPTEMBER 21: A young woman walks out of a shop advertising the new Apple iPhone 5 on the first day the smartphone went on sale on September 21, 2012 in Berlin, Germany. Apple is reporting over 2 million pre-order for its new phone, which went on sale globally today. (Photo by Sean Gallup/Getty Images)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: Apple employees cheer at the crowd as the first in line enter into the Apple store in Covent Garden to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: First in the queue Ryan Williams 22, of Kent, leaves the Apple store in Covent Garden after being the first to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. Mr Williams hopes to raise money for Cancer Research UK by auctioning the phone, and has been queuing for nearly a week. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: First in the queue Ryan Williams 22, of Kent, is cheered by Apple employees as he is let into the Apple store in Covent Garden to be the first to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. Mr Williams hopes to raise money for Cancer Research UK by auctioning the phone, and has been queuing for nearly a week. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    Apple Store employees cheer as customers are allowed into the shop to buy the new iPhone 5 smartphone at Covent Garden in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    People queue outside the Apple Store to buy the iPhone 5 at Covent Garden in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    People queue outside the Apple Store to buy the iPhone 5 at Covent Garden in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

  • GERMANY-US-IT-INTERNET-TELECOM-APPLE-IPHONE

    Customers queue to enter the Apple Store where a giant logo is displayed in the southern German city of Munich on September 21, 2012 as the iPhone 5 goes on sale. AFP PHOTO/CHRISTOF STACHE (Photo credit should read CHRISTOF STACHE/AFP/GettyImages)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    People are served free coffee while waiting in a nearby park while queueing for the Apple Store to buy the new iPhone 5 smartphone on the day of its release at Regents Street in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

  • New iPhone goes on sale

    Customers queue outside the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • New iPhone goes on sale

    Customers queue outside the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • New iPhone goes on sale

    Apple workers count money as a customer buys the new iPhone 5 at the Apple Store in Covent Garden, London.

  • New iPhone goes on sale

    Customers enter the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • New iPhone goes on sale

    Customers enter the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • New iPhone goes on sale

    Customers queue outside the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • New iPhone goes on sale

    Apple staff outside the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • New iPhone goes on sale

    Customers enter the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • New iPhone goes on sale

    Customers queue outside the Apple Store in Covent Garden, London, as the new iPhone 5 goes on sale.

  • FRANCE-US-APPLE-IPHONE

    A customer (L) holds euro banknotes to purchase an Apple's new iPhone 5 smartphone beside an employee in an Apple store, on September 21, 2012 in Paris. The iPhone 5 goes on sale on September 21, 2012 in the United States, Canada, Britain, France, Germany, Australia, Hong Kong, Japan and Singapore. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/GettyImages)

  • FRANCE-US-APPLE-IPHONE

    An employee holds euro banknotes beside an Apple's new iPhone 5 smartphone at a cash register in an Apple store, on September 21, 2012 in Paris. The iPhone 5 goes on sale on September 21, 2012 in the United States, Canada, Britain, France, Germany, Australia, Hong Kong, Japan and Singapore. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/GettyImages)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: People queue outside the Apple store in Covent Garden to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: People queue outside the Apple store in Covent Garden to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: Apple employees cheer at the crowd as the first in line get into the Apple store in Covent Garden to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: First in the queue Ryan Williams 22, of Kent, is cheered by Apple employees as he is let into the Apple store in Covent Garden to be the first to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. Mr Williams hopes to raise money for Cancer Research UK by auctioning the phone, and has been queuing for nearly a week. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • The Apple iPhone 5 Goes On Sale

    LONDON, ENGLAND - SEPTEMBER 21: First in the queue Ryan Williams 22, of Kent, leaves the Apple store in Covent Garden after being the first to purchase the iPhone 5 smartphone on September 21, 2012 in London, England. Mr Williams hopes to raise money for Cancer Research UK by auctioning the phone, and has been queuing for nearly a week. The much anticipated Apple iPhone 5 went on sale across the globe today. (Photo by Dan Kitwood/Getty Images)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    An Apple Store employee gestures after dealing with customers waiting to buy the iPhone 5 outside the shop at Regent's Street in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    People queue outside the Apple Store to buy the iPhone 5 at Covent Garden in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

  • BRITAIN-US-IT-INTERNET-TELECOM-APPLE

    Apple Store employees create a tunnel for customers as they are allowed into the shop to buy the new iPhone 5 smartphone while a customer (top L) leaves with a new phone on the day of its release at Covent Garden in London on September 21, 2012. Apple's iPhone 5 hit stores in a festive global rollout, with long queues of devotees undeterred by a lukewarm welcome from experts and complaints about the smartphone's new mapping system. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)