Samsung Infuse 4G is one of the ATT's smartphone to support it GSM, UMTS and 3G HSDPA service. It comes with 4.5 inches super AM-OLED display with slim and thin block candybar form factor. the Infuse 4G is works on 3G HSDPA network. This is not one of the upcoming 4G HSPA+ smartphone in ATT list.
Samsung Infuse 4G HSDPA Specifications:
Network : GMS, HSDPA, HSUPABand : Quadband GSM, UMTS 850, 1900, 2100 Mhz
Prcessor : 1.2 GHz Hummingbirf
RAM : 512 MB
Operating SYStem : Android 2.2
Display: 4.5 inches Super AMOLED capacitive touch
Camera : 8 MP, 1.3 Front facing
Internal storage : 16 GB
External memory : microSD, SDHS up to 32 GB
Music : MP3, AAC, AAC+, WMA, MIDI
Video : MPEG4, H.263, H.264, Youtube player
Browser : HTML, Flash
Messaging: SMS, MMS, Email
Connectivity: Bluetooth, Wi-Fi BGN, microUSB 2.0, 3.5mm sound jack, DLNA
GPS : A-GPS
Battery : 1750 MAh
Samsung infuse 4G announced at January 5, 2011.