The cellular carries in the U.S. started receiving preorders for the BlackBerry's Z10 devices, a really big news came out from the corridors of BlackBerry.

BlackBerry, earlier know as Research in Motion (RIM), claims to be receiving a huge order, which the company never received in its history, from its one of the customers.

According to the company, the order is to the tunes of 1 million handsets of BlackBerry Z10.

"An order for one million devices is a tremendous vote of confidence in BlackBerry 10," said Rick Costanzo, EVP Global Sales, BlackBerry. "Consumers are ready for a new user experience, and BlackBerry 10 delivers. With strong partner support, coupled with this truly re-invented new platform, we have a powerful recipe for success."

BlackBerry has declined to reveal the name of its partner who bought 1 million samrtphones in a single order, but speculations indicate towards on the U.S. carriers who would be anticipating huge sale with attractive price options.

"Verizon Wireless, the biggest mobile service in the U.S., didn't immediately return a call seeking comment on whether it was involved in the transaction. AT&T Inc. and Sprint Nextel Corp., the country's No. 2 and No. 3 wireless providers, declined to comment," Bloomberg reports.

However, the BlackBerry Z10 is now available for preorders on Verizon, and the device will be available in the retail stores of Verizon for grab from March 28.

Verizon is selling the BlackBerry Z10 for $199.99 with a two-year contract.

As a huge order of 1 million devices has already been placed, the carrier selling the smartphones for lowest price will be expecting a huge demand.

Looking at the market, the 'biggest order' would have been placed by one of the U.S. carriers as the U.S. market is the most potential one to finish off this kind of huge inventory.

This is some kind of indication that there are over 1 million devices up for grab, and if the BlackBerry Z10 gets people's appreciation, many would hope that BlackBerry doesn't run into supply related issues.