Samsung Infuse 4G AT&T smartphone impressions

I've been testing an AT&T Samsung Infuse Android 4G smartphone for a few weeks now and, it's a solid smartphone phone.  It has a very large, beautiful 4.5 inch screen and like most Samsung smartphones, it's extremely thin and light.  AT&T has changed its policy and now allows out of market Android applications to be installed so I was able to quickly and easily install Lotus Traveler for access to my Lotus Domino corporate email, contacts and contacts and the new Lotus Sametime for mobile native client.  I was disappointed, however, that I couldn't use the Infuse as a wi-fi hotspot like my Apple iPhone and other Android phones.  That said, I'm pleased to see that AT&T is expanding its Android smartphone offerings.   I'm less impressed, however, with the 4G (HSPA+) service which offers only marginal improvements over 3G.  Battery life remains an issue for the Infuse and other large screen Android phones.

Processor: Single core, Hummingbird, 1200 MHz
Screen: 4.5 inch Super AMOLED.  480x800 resolution
Camera: Dual.  8MP rear with 1.3MP front; led flash
Form factor: Candybar
Ports: Micro USB (HDMI via micro USB)
Network: AT&T, 4G (HSPA+)
Weight: 4.9 oz
Memory: 16 GB
Operating system: Android 2.2