Phone insurance firm SquareTrade found that the new Galaxy S4 fall short of Apple's iPhone 5 in terms of durability. From Apple Insider:

SquareTrade put the Galaxy S4, the Galaxy S3, and Apple's iPhone 5 through a torture test of sorts, reproducing the perils that smartphones face in the hands of everyday consumers. The handsets were dropped to test case strength, skidded across tables to see how far they would slide, and dunked underwater to see how well they fared with submersion.

All three phones scored a "Medium Risk" in SquareTrade's evaluation, but the Galaxy S4 got a worse numerical score than the iPhone 5 and even its predecessor Galaxy S3. On a scale of 1 to 10, with 10 being the worst, Apple's iPhone scored a 5, while the Galaxy S3 and S4 scored 6.5 and 7, respectively.

 iPhone 5 bests Samsung's Galaxy S4 in smartphone torture test