iphone-4s-pricingIt looks like the iPhone 4S will be Apple’s best-selling iPhone yet. Pre-orders for the entry-level $199 iPhone 4S have already sold out on U.S. carrier websites — this after Apple received over 3 million pre-orders over the last weekend.

But Apple isn’t sitting idly by — the company has apparently upped its iPhone 4S order with equipment manufacturer Pegatron from 10 million units to 15 million, the Taiwanese news site Digitimes reports.

Given the strong pre-order numbers, Apple could sell more than 25 million iPhones this quarter (including older models), according to Piper Jaffray analyst Gene Munster.

At the moment, Verizon and Sprint’s sites show no stock available for the 16-gigabyte iPhone 4S. AT&T’s website now sh0ws a potential delivery time of over three weeks for that model. The larger 32GB and 64GB iPhone 4S models are all still available for pre-order. If you had your heart set on the 16GB iPhone 4S, your only recourse is to wait in line at a retail store and hope you can snag one before they sell out.

Pegatron has reportedly landed about 15 percent of Apple’s total iPhone 5 orders, but its stock may not start shipping until next year, supply chain sources have said. Meanwhile, Foxconn, Apple’s dominant mobile device manufacturer, has been churning out iPhone 4S units for months now.

Via Bloomberg

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