Apple fans desperate to be among the first to get their hands on the iPhone 6 and iPhone 6 Plus next week can now pre-order the handsets online.
Demand was so high overnight, the official Apple store crashed, as did a number of network operator sites, including O2 and EE.
And now carriers are reporting that the larger, iPhone 6 Plus model has already sold out in some regions.
Verizon is showing a shipping date of 7 October, while Sprint is advising buyers iPhone 6 Plus models are delayed.
Pre-orders for the devices are available from midnight in each of the regions where the phones will launch, including the UK, US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, and Singapore.
Devices can be pre-ordered from Apple as well as network operators, and for the first time Apple is letting people collect their phones in stores on the day of launch, 19 September.