Samsung announced it has sold over 30 million Galaxy S3 phones. The S3 is probably Samsung's best selling smartphone ever (in June Samsung said it sold over 28 million S2 phones, so it's probably close - but the S3 will surely overtake the S2 in sales if it didn't already).
Samsung's Galaxy S3 has a 4.8" 1280x720 HD Super AMOLED (306 PPI, with Pentile), a quad-core 1.4Ghz CPU (dual-core 1.5Ghz in the US models), 1GB of RAM (2GB in the US models) and an 8 mp camera (1080p video). The phone weighs 133 grams and is only 8.6 mm thick. In the US it costs around $150 with a contract and is being offered by AT&T, Verizon and Sprint. You can also get it unlocked for $799.