1.- I am very pleased with the screen, my fears are gone. Comming from an Xperia S, this screen looks sharp, bright and the colours are beautiful. AMAZING. Viewing angles are not the best but they were OK enough to impress me and my Samsung/Apple-fanboy friends. The Barvia engine does an incredible job making pics and vids look vivid and alive. Cool. My sammy/apple-loving friends will never put me to shame again over screen quality: the screen made them drool ("is that really a Sony phone?").
- Not the "best" screen out there but at least adequate for a high-end phone, and a GREAT improvement over my previous Xperias.
2.- Bugs and lag. WiFi bug? What WiFi bug? Mine works flawlessly ( fingers crossed). Lag? Camera does have some lag when starting, but nothing to die for (and it makes way better pics than any of my previous phones). I miss the "pinch to see al the widgets floting" screen but I apprecite the fact that Sony didn't change the new ICS/JB buttons layout and functions. I can make folders in my app drawer and many other goodies. The Album app shines and it's a plleasure to use it.
- Polished minimal Sony skin over the vanilla Android UI.
3.- Despite the bigger screen and the quad core, battery life is WAY BETTER than the Xperia S and SGSIII; no charges required during the day for me, and I am a moderate-to-heavy user. I have not messed with Stamina mode yet. My previous phones needed a charge by noon, this one goes all the way to about 6 pm.
- Nice battery life for such a big HD screen. A bigger battery would ruin the slim profile.
4.- I was very affraid of the sound level, but despite being waterproof the loudspeaker sound is OK, not as good as my Xperia S or the SGSIII but good enough, good enough for the alarm to wake me up (and that's a lot ) and good enough to be heard when in my pants pocket or to watch some youtube videos with my friends around in not-so-noisy environments. In-call sound is clear and it has some goodies to enhance the sound, be sure to check them in settings.
- The loudspeaker sound volume takes some sacrifices for being waterproof, but it's still enough for me. I'm not a DJ.
5.- WATERPROOF !!! (or splashproof or water resistant or whatever you want to call it). Boy I should have made some pics of my friends' faces when I submerged this baby in my glass of beer Take that SGS and Apple fanboys! Your phone is rubbish; mine is a shiny piece of waterproof polished cool looking purple glass
- Having a waterproof phone is definitively a BIG plus, especially in a rainy environment.
6.- Build quality is Sony-grade.I made a bet with my fanboy friends: let's drop your iPhone5s, your SGSIIIs, and my Xperia Z from only one foot high. They declined I did it just to show off. From two feet.
- Just what I expected from Sony: it not only looks but feels premium.
7.- Finally, the looks and cool factor. This phone is a chick magnet! They love it in purple. Ice-breaker, conversation starter (Lucky enough I'm not that kind of guy ). The WOW factor is assured with this phone, not ubiquitous but exclusive.
- I don't know if the SGS5 will come out with a rocket-fuel propelled chip or a mind-controled UI, but this phone is simply the best-looking-phone.
Well, I found that the loudspeaker volume went very low after the phone got submerged in water.
At first I was shocked, I thought I may have forgotten to close the seals properly and I thought I could have got some water damage, but after double-checking I realized the reason was very simple: the loudspeaker gets soaked in water.
To recover full sound level I had to:
a) suck the water out of the speaker or
b) warm the phone through a charge.
Now let me put my flame-retardant suit on and let's wait for your oppinions. Your mileage may vary, but mine has been great to date. Just my oppinions. Have fun.