recently i bought a new Samsung infuse 4g. i upgraded my phone from samsung blackjack to Samsung infuse 4g. it is great. i found out that the Samsung smart phone is running Android 2.2 Froyo not lates Android 2.3 Gingerbread and it’s using the Samsung TouchWiz UI skin, which ok by me because it runs fast. the samsung infuse has a 1.2GHz processor and along with 512MB of RAM and a microSD card slot is attached on Samsung Infuse 4G. my sd card is 2g which is plenty, but i m findiing out that i might run out of space with all my mp3 collection. if you have not seen the new Samsung Infuse 4G, it has the first thinnest HSPA+ Category 14 (21Mbps) 4G phone which is only 8.99mm thick which will be suitable in everyone pocket. in the fall like in septempber att will release the 4g network which i can't wait so i can surf faster, although the enhance 3g is already good enough. the phone comes with double cameras, front and back which is a standard for Android phones especially on Samsung infuse 4g. The back camera is 8-megapixel with 720p HD video recording and a front-facing 1.3-megapixel camera for video calls. A 3.5mm audio jack and a special version of Angry Birds pre-installed with some hidden levels, i played, but i got bored right away, texting is nice, i just disabled that auto spelling thing, its annoying, because if i m texting, it enters some word i dont want. but overall i am 100% safisfied with the phone. its very nice.