Review: Samsung Focus Flash for AT&T
The Samsung Focus Flash has the same set of communications tools found on other Mango phones.
The email app supports Microsoft Exchange as well as POP and IMAP email accounts. Emails flow in as often or as sporadically as you wish. You can send, save, archive, forward, flag, and search through emails with ease. Gmail works really well in Mango, and thanks to the Exchange support built into Gmail, you can add Google Calendar and Google Contacts as easily to the Focus Flash as you can Gmail itself.
The SMS/MMS application - which is one of the core tiles on the device - offers threaded conversations. Text appears in colored bubbles in a way that will be familiar and intuitive to most people. Images appear in-line with the conversation.
As for instant messaging, the only client built into the OS is for Windows Live and Facebook. For all other IM services, you'll have to seek out third-party apps from the Marketplace.
The People Hub serves as your nerve center for social networking. It provides a rich, well-rounded social networking experience that includes Facebook, Twitter, and LinkedIn.
In addition to the People Hub, there are excellent Twitter and Facebook apps built for Mango available in the Marketplace.