Review: Samsung Galaxy S II for T-Mobile
The stock Android messaging tools are on board and cover the basics. The SMS application remains simple yet powerful. Messages are threaded in a conversational style, and media (photos, video, audio) fall in-line with the text. The usual two Android email applications are also present. There's the generic T-Mobile email app for POP3/IMAP4 and Exchange, as well as the native Gmail application.
On the instant messaging side of the equation, the stock GTalk application is on board for Google users. As with the other Galaxy S II variants, Samsung's Social Hub is on board the Galaxy S II for T-Mobile. It lets you manage nearly everything — email, SMS, Facebook, IM, Twitter, even your calendar — from a single portal. Social Hub supports Windows Live and Yahoo IM messaging services, but not AIM. The Hub takes a little bit of time to configure, but once you do, it can be your one-stop-shop for managing myriad communications.
It is a convenient tool if you prefer to triage messaging rather than really dive into it. For example, if you wanted to skim through messages quickly, it is easy to jump from Facebook to Twitter and back without having to jump between applications.
Speaking of which, Facebook and Twitter aren't pre-installed, so you'll have to download them yourself.
Other social network-y type apps/services on board include Google Latitude, but not Google+. Qik's video chat application is also on board, which lets you conduct real-time, two-way video chats with other users of the Qik application.