Its a bit quicker, the screen is beautiful but I don't like the colors a much. That really leaves the super quick camera shutter, smart stay and lte from my perspective. My epic has actually grown on me since she got the gsiii. I'm good until the next model comes out hopefully with better radios.
I discovered the Sprint PCS area last night, and learned that Sprint's (yet another) Grand Plan to roll our LTE is making the same mistakes that made their Grand Plan to roll out WiMAX and Grand Plan to roll out EVDO suck so much and be functionally non-existent to all of the people who don't live in the heart of a major city.
After they rolled out EVDO Rel.0 I was living and working in downtown Chicago, so my data card worked OK there. Sometimes it would even work in other parts of the city. But if I stepped an inch into the suburbs, *poof* EVDO was gone, and I'd have to restart the radio in 1xRTT mode. Even now my latest EVDO Rev.A data dongle drops down to 1xRTT often in big city suburbs and smaller cities...like Madison WI...where I live. And that's with a high-tech Antenex Phantom rooftop antenna!
I've never seen a WiMAX signal. Never. Not once. Not even in Chicago where the map says it exists. Unlike my Sierra Wireless radios that have external antenna jacks, the WiMAX radios don't, so I can't do anything to boost the signals. And I'm talking about areas that include the corporate headquarters for Fortune 500 companies Allstate, Baxter, Crate and Barrel, CVS Caremark, Fortune Brands, Illinois Tool Works, Kraft Foods, United Stationers and Walgreen's; as well as other important businesses like A C Neilsen, Culligan and Underwriters Laboratories. After 5 years of trying, Sprint can't service this business-rich area?
I don't know where you live, but unless it's at the core of one of a half dozen or so markets, you're not going to see Sprint LTE in 2012.
Apparently Sprint plans on roaming agreements with other LTE providers. The problem is that the other LTE carriers own most of their LTE spectrum down in the 700MHz band, which is a mighty long wavelength for a little cellphone. It also means that new Sprint phones will have to pack in 4 to 6 extra radios and antennas just for LTE roaming. From an engineering point of view it looks like they're going to have to sacrifice quality for quantity in their radios.
I'm planning on keeping my Sprint S2 phone for at least 5 years, based on what I've read.