Carphone Warehouse claims 'thousands' of customers reserved a device within 24 hours of its unveiling.
Last week, Samsung claimed nine million Galaxy S III pre-orders ahead of the release next week. It took the Galaxy S II five months to reach ten million sales.
Now, Europe's largest phone retailer Carphone Warehouse reckons demand for the S III has been off the charts, with thousands of customers handing their requests in to over 800 stores.
Graham Stapleton, chief commercial officer, Carphone Warehouse, said: "Pre-order demand for the new Galaxy S III has surpassed expectations since the handset was first unveiled two weeks ago. The first 24 hours alone saw thousands placing their pre-order at Carphone Warehouse.
"The Galaxy S III is without a doubt the fastest selling pre-order of 2012 so far. We're gearing up for an exceptionally busy launch day at the end of the month as the handset lands on shelves at our stores across the UK."
Pre-order customers can receive the device on May 29th, with general release taking place on the 30th.
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