The Samsung Galaxy Grand has a long list of connectivity features. Let's start off with the basics - quad-band GSM/GPRS/EDGE for both SIMs and 850/1900/2100 (SIM 1), 900/1900/2100 (SIM 2) support. The 3G connectivity is backed by HSPA (21.1Mbps downlink, 5.76Mbps uplink).
The Wi-Fi support covers a/b/g/n, with both 2.4GHz and 5GHz band compatibility.
There's also Bluetooth 4.0 LE, which builds on Bluetooth 3.0 with the efficient Low Energy mode.
The Samsung Galaxy Grand has a tweaked version of the Jelly Bean Android browser, but Chrome also comes pre-installed, if that's what you prefer.
Anyway, the default browser supports both double tap and pinch zooming along with the two-finger tilt zoom. There are niceties such as multiple tabs, text reflow, find on page and so on. A neat trick is to pinch zoom out beyond the minimum - that opens up the tabs view.
The Web browser comes with Incognito mode, which lets you surf the web without the browser keeping track of your history or storing cookies. You can also switch to a more minimalist UI, which currently is in a Lab stage. It disables most of the browser's user interface and gives you a quick five-button layout to access the basics.