[Xperia Z1 General] ahomad:
I have just got my Nexus 5 few hours ago, and I thought I would give a quick comparison between the Nexus 5 and the Xperia Z1 while waiting for more in depth comparisons from tech sites. I will keep it short and informative.

Look, Feel and size

The Nexus is alot lighter and smaller but the Z1 is more premium. This doesn't mean that the Nexus looks cheap. the Nexus is very good and the Z1 is excellent in the feel but the Nexus is better when looking at the size or weight.

Performance

Benchmarks

I know it means nothing bla bla bla, but people still wants to see them

antutu benchmark X nexus ~26000, Z1 ~35000

quadrant nexus ~8700, Z1 ~21000

sunspider nexus 745ms, Z1 694ms

I am not sure why the nexus 5 scored less (consideribly less for antutu and quadrant) but I think it has to do with ROM stability as the nexus 5 was turned on for the first time few hours ago.

Real life

just done few tests on opening various websites and apps. the Nexus was milliseconds faster on opening almost all websites except one or two where both phones were as fast. However, opening apps were of the same speed for both phones. (keep in mind that the Z1 has alot going in the background while the nexus was clean)

Screen

I tried viewing various photos and videos but couldn't really say which is better. Some photos were better on the Nexus while other were better on the Z1.

the viewing angle were significantly better in the Nexus, but not perfect though.

The brightness of both devices are almost equal.

.

Camera

This is quite hard, I do need some more time to say which is better. But initially, the Nexus has better low light image (the images are softer which has advantage of less noise and disadvantage of less details) but the colors are more accurate in the nexus as well. in good light conditions, the Z1 is better in every way.

Speaker

tried playing various sounds in youtube and the Z1 is Alot louder and of better quality than the Nexus.

Battery

I didn't have time to test the battery life of the nexus of course. However, during testing the previous things, the Z1 dropped ~%25 while the Nexus dropped ~%40. Again, I know that the battery tends to get better after couple of charges but the Z1 had lots of apps installed and lots working in the background while the Nexus was clean. Additionally, the Nexus was in airplane mode while the Z1 had the radio working. all in all, I would say the Z1 battery would be better as expected by the battery size and hopefully it will get better after getting 4.4

I should mention that the Nexus 5 was warmer than the Z1 after finishing these tests.

Advantages of the Z1

Better Battery life

Better camera images in good light conditions

Louder speaker

SD card

more premium feel

doesn't get warm as fast

Advantages of the Nexus5

Android 4.4

Better camera images in low light conditions

better viewing angel

smaller and lighter

Both were as good in

Screen quality

Performance

Here is video showing detailed comparision between the Nexus 5 and the Z1 by shem2409 who came up with similar conclusion.

[YOUTUBE]rpeiIHgaiSs[/YOUTUBE]

I don't see the nexus 5 significantly better in anyway compared to my Z1 or SGS4. And the 4.4 update doesn't seem to add much (the Z1 doesn't lack anything compared to the nexus 5) 4.3 and 4.4 mostly added performance improvements which won't really benefit us (Z1 users). The Z1 is already powerful enough and I didn't see it lag or stutter not even once. and I couldn't see any differences between the Z1 and Nexus 5 overall performance. 4.4 will benefit low end and mid range phones more than high end ones. We might benefit from battery improvement more than performance improvement.