The Sony Xperia Z1S is T-Mobile US' version of the Z1. The Z1S has launched a bit later, though, so while pretty much everything that you've read
in our comparison thus far holds true, we're publishing an updated comparison conclusion below.

Sony Xperia Z1S vs Samsung Galaxy S4: Conclusion

It's undeniable that the Xperia Z1S sports some technological advantages due to coming out more than half a year after the Galaxy S4. With a faster chipset and a marginally better camera, Sony's smartphone is arguably the better device of the two here. Still, we have to give credit where it's due, and in this case we'd give it to the Galaxy S4 for holding up so well after all this time. Samsung's handset doesn't lag too much behind in any area, and is still among the best smartphones money can buy right now.

If you're currently rocking a GS4 and are wondering if you should "upgrade" to the Xperia Z1S mainly for its technological advantages, we'd say that it's not worth it, because the differences really aren't so big. If you happen to be choosing between the two, and have actually read all the pages of this comparison, then you probably already know that the Z1S is the overall better smartphone, though you should definitely take into account that it's bulkier than its rival, despite having the same screen size.

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