Samsung says that they sold over a million Galaxy S II phones in Korea - in just a month (one phone sold every 3 seconds...). This is a new record for Korea (the previous reord was the Galaxy S - which took 70 days to sell a million units). The Galaxy S II actually broke several records, selling 100,000 units in 3 days, 200,000 units in 8 days and 500,000 in two weeks.
In early May Samsung said that they got over three million pre-orders for the S II. The company originally planned to sell 10 million units in 2011, it seems that they will sell more if the success continues...
Samsung's Galaxy S2 is the successor to the popular Galaxy S. It has a 4.3" WVGA Super AMOLED plus display, 1.2Ghz dual-core processor, NFC, Bluetooth 3 and HSPA+. It's only 8.49mm thick at its thinnest point.