My Spigen Neo-Hybrid case for my GS4 broke a few weeks ago. The hard plastic frame just snapped in half at the thin sections where the USB plug goes. The phone was never dropped, and the case was in perfect shape, other than the break, of course.
I emailed Spigen, twice, and sent them pictures of the broken case, twice. They never even wrote me back. The case was originally bought directly from them (was def. not a knockoff), and they can't even write me back!!
I ended up replacing the case with a Neo-Hybrid knockoff from eBay, and it appears much more sturdy... and it was less than $20 delivered!!! I clearly shouldn't have switched to Spigen cases, with their fragile materials and pathetic customer support. Never again will I buy their overpriced garbage. Think twice before buying one unless you want to he shelling out more cash to replace it when it breaks.