Samsung Galaxy S5's first day sales were 30% to 100% higher than its predecessor's launch day sales
The Samsung Galaxy S5 was released on Friday in 125 countries, and will soon be offered in 150. Samsung says that it has received orders for millions of the device, and "the market is not yet saturated." Instead, Samsung appears to be worried about whether or not it has enough supply to go around. The main differences between this year's model and last year's phone, is the embedded fingerprint scanner on the front of the Galaxy S5, the heart rate monitor, improved rear camera, and the IP67 certification. This means that the phone can be submerged at a depth of 1 meter (3.2 feet) for up to 30 minutes, and survive. The quad-core Snapdragon 600 has been replaced by the Snapdragon 801.
Last year, the Samsung Galaxy S4 got off to a hot start, selling 10 million units in less than a month, before sales slowed down. The Galaxy S4's predecessor, the Samsung Galaxy S III, took 50 days to accomplish the same sales total. The Samsung Galaxy S II needed 5 months to hit the 10 million sales mark, while the original Samsung Galaxy S reached 10 million in sales after 7 months.
Ironically, in many countries, Samsung Galaxy S5 buyers had to wait on long lines, which resembled the same lines that Apple iPhone buyers wait on whenever a new model is launched. Samsung had made fun of these iPhone buyers waiting on line, dating back to ads for the Samsung Galaxy S II.
source: ZDNet (translated)