iPhone 4S already "Strongest iPhone Launch Ever", 3M Sales estimated for Launch Weekend

Pre-orders for the iPhone 4S have already broken previous records, clocking up 1 million orders in just one day, which has encouraged analysts to revise up their estimates.

Mike Abramsky of RBC Capital Markets estimates 3 million iPhone 4S sales over the first weekend of its presence on the market. Meanwhile, Gene Munster, analyst at Piper Jaffray, had predicted Apple would sell 25 million units in the holiday quarter, which he now suggests seems comfortably achievable.

"We expected iPhone 4S to be the strongest iPhone launch ever, which Apple has now confirmed," Munster wrote, adding that the "iPhone 4S has the momentum to meet or exceed our 25m unit estimate for the Dec-11 quarter."

Previously the iPhone 4 performed well above expectations in 2010, selling 600,000 units in the first day after pre-orders became available, and 1.7 million units in the first three days on the market, establishing a record at the time.

Analysts had initially been more reserved in their predictions, assuming that iPhone 4S would disappoint the public with its not so "groundbreaking" upgrades. AT&T, the main wireless carrier who offered iPhone 4S to subscribers, failed to sugarcoat the deal attracting users with early upgrade discounts which seemed a bad sign.

However, a reason for the greatly increased demand for the new iPhone its expanded availability on three major carriers in the US, as well as concurrent launch in Canada, a number of European markets and Japan.

The sales graphic is expected to grow significantly at the end of the month when iPhone 4S will enter an even wider international market, being available in 22 more countries; by the end of this year it will hit another 70 markets.

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