The images are rather blurry and lacking in detail, but a regulatory filing spotted by Chinese site Tenaa of a handset described by Samsung as the GT-I8580 looks rather like a smaller version of the S4 Active, reports Engadget.

Visually, it looks like the chunky Galaxy S4 Active, what with its return to physical buttons and a fairly robust (and cheaper looking) case. Aside from that there’s little to go on, although that model number has previously been associated with a benchmarked phone featuring a 4.65-inch display with a low-end 480 x 800 resolution …  expand full story