Come on, people. You can’t do or see squat on a 3.2″ screen. Get a real phone!

4.8′-5.5″ are too large unless you’re 6.5ft tall.

Ceramics (as used in watches) are metal coatings that are applied to the finished metal underneath and then baked in place.  They are available in a wide range of colors and are very tough, but they are still very much susceptible to scratching and flaking (especially along sharp edges of the product the coating has been applied on.  These coatings were not designed for impact protection.  Coatings like ceramic, teflon and a variety of PVD coatings were designed primarily with corrosion protection (for different types of environments).  The most durable of all these coating types are those that are PVD applied and of those the carbon based coatings are some of the toughest (Casio’s Diamond Like coating comes to mind).  these coatings are not ceramic though, and they are not baked on.  they are very tough, but they can still be scratched.  The biggest thing to take from this is that regardless of the coating, the underlying chassis that the coating binds to is always metallic, which means that if these phone cases are in fact ceramic coated, then the case itself will be metal (a pure ceramic case is possible, but they are inherently brittle – dropping your pure ceramic phone on a hard surface may lead to the case cracking).  Lastly, scratched cases cannot be practically re-coated.  To do so, requires removing the entire coating and reapplying it from scratch.  I can’t imagine this being cost effective for most owners.

The reason these coatings work on watches is because watches are not generally dropped (they are carried on wrists), and by and large watches are relatively protected (by sleeves and the like).  Most watches designed for real world professional applications (read, real world applications in an abusive environment), tend to be made of some type of plastic or uncoated metal (usually stainless steel or titanium).

I’m not sure that this is the best decision for Samsung to pursue.

3.5″ to 4″ is perfect.

The reason the screen is that big could be technical though, you see Samsung uses AMOLED technology and if they want to make a HD screen AND have an RGB subpixels instead of pentile, 4.8″ is probably the smallest they can make the screen/pixels.

The samsung blaze is coming out soon with a 3.97 inch screen with a ton of bells an whistles.  The next iphone will most definetly be a 4 inch screen.  In the world you live in all phones are 4.8 just because one variant of a phone from a manufucter is 4.8.  You are either trolling or you are unimformed