The Nexus S is an Android phone, and thus has all of the features provided by the Android OS. So yes, the Nexus S does support SMS. All Android phones also come pre-packaged with Google Talk, which lets you chat with your friends via Google's XMPP (Jabber) server, utilizing an internet connection (either your mobile data connection, or a WiFi network).
The Google Nexus S is from T-Mobile and Sprint.
There are only a few differences between a Nexus S and a Nexus S 4G. Nexus S is T-Mobile phone, while the Nexus S 4G is a product of Sprint's Samsung. The only other major difference is that the 4G version offers Google Voice.
Probably not. The Sprint Nexus S is a CDMA device. Simple Mobile uses GSM devices. An unlocked Nexus S that can run on GSM networks will work however.
Yes, most phones these days come with a web cam. The Nexus S has a Front-facing: VGA (640x480)
Yes, the Nexus One was available for T-Mobile, but there was an AT&T version, and an unlocked version.
It is a tablet, which makes it a mobile device.
Since the question doesn't specify what Nexus the person is comparing it to the Nexus S, here's the order of Nexus phones (and by manufacturer) to date: -HTC Nexus One -Samsung Nexus S -Samsung Galaxy Nexus -LG Nexus 4 -LG Nexus 5
Since the Nexus S, Google brought out the Galaxy Nexus, Nexus 4, and Nexus 5.
No, the Nexus One only works on GSM networks, which in the US is AT&T or T-Mobile.
Nexus S was created on 2010-12-16.
It never did, but it did get the Galaxy Nexus, which had a number of improvements over the Nexus S.
no