iPhone sales in the AT&T era

Analysts estimate that Apple may have sold as many as 90 million between 2007 and 2010



Source: Company reports and Q1 consensus estimate

Next week, when Apple (AAPL) releases its earnings for the quarter that ended Christmas Day, it will be closing the books on the era of AT&T (T) exclusivity in the U.S. — the company’s largest single market for iPhones.

It was an extraordinary run, despite all the jokes about dropped calls and flaky service. Since Apple launched its touchscreen smartphone on June 24, 2007, iPhone sales have become the single largest contributor to its bottom line, accounting for 38.6% of the company’s revenue in 2010. As of September, Apple had sold a total of 73.7 million iPhones worldwide, generating $45.6 billion in revenue.

Estimates for how many it sold last quarter are, as usual, all over the lot. Among the 33 analysts we polled, predictions ranged from a low of 14 million (from Morgan Keegan’s Travis McCourt) to a high of 18.35 million (from blogger Dennis Hildebrand of Apple’s Gold). The average of all the estimates  — 15.78 million — would bring worldwide iPhone sales in the pre-Verizon (VZ) era to more than 89.6 million.

Below the fold: The Q1 2011 iPhone unit sales estimates we’ve gathered so far. We’ll find out who was closest to the mark after the closing bell Jan. 18.

Included, where available, are the analysts’ ranking in the so-called Deagol scale — a measure of how closely their estimates matched results over the previous three quarters as compiled by an amateur Venezuelan analyst with one of the best track records in the business. His real name is Daniel Tello and he posts his numbers at Deagol’s AAPL Model.

Analyst, AffiliationUnits (millions)Date of est.Deagol rank
Dennis Hildebrand, Apple’s Gold18.3512/28/1025
Rajesh Ghai, Think Equity17.0011/29/1035
Mark Beauch, Apple Finance Board16.9012/27/10NA
Jeff Fosberg, Apple Finance Board16.8012/29/1013
Nicolae Mihalache, Traderhood16.7512/30/1030
Robert Paul Leitao, Apple Finance Board16.751/2/1111
Alexis Cabot, Apple Finance Board16.7212/23/108
Daniel Tello, Deagol’s AAPL Model16.5212/23/103
Brian While, Ticonderoga16.221/4/11NA
Matthew Hoffman, Cowen & Co.16.2012/16/1033
Patrick Smellie, Apple Finance Board16.1612/29/1024
Horace Dediu, Asymco16.1612/29/101
T. Michael Walkley, Canaccord Genuity16.101/4/1131
Brian Marshall, Gleacher & Co.16.0012/29/1027
Shaw Wu, Kaufman Bros.16.0012/16/1034
Chris Whitmore, Deutsche Bank16.001/3/1114
Kathryn Huberty, Morgan Stanley16.0012/29/1029
Richard Gardner, Citigroup16.0012/2/1021
Nehal Chokshi, Technology Insights15.731/4/1110
Turley Muller, Financial Alchemist15.7012/29/104
William Power, Baird15.2011/4/10NA
Maynard Um, UBS15.6012/28/1020
Scott Craig, Merrill Lynch15.1012/9/1022
Jeff Fidacaro, Susquehanna15.1011/29/1017
Yair Reiner, Oppenheimer15.001/3/119
Gene Munster, Piper Jaffray15.0011/29/1028
Charlie Wolf, Needham15.0010/19/10NA
Hendi Susanto, Gabelli & Co.14.9012/17/10NA
Bill Shope, Goldman Sachs14.8712/12/1019
Ben Reitzes, Barclays Capital14.8011/9/1018
Doug Reid, Stifel Nicholaus14.2412/30/1023
Daniel Ernst, Hudson Square14.0012/29/1040
Tavis McCourt, Morgan Keegan14.0012/30/1036

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[Follow Philip Elmer-DeWitt on Twitter @philiped]