I saw that probably those guys inadvertently dropped it or put it the pocket and hit it against some edge or something.
So far i dont have any issue's i dropped mine once on the parquet floor, I had the casing on although

the only reasons to crack the glass :

-drop
-excessive force applied

for alkali-aluminosilicate glass to expand due to heat, its likely impossible. you need a very high temperature for it, where the heat from overheats is impossible.

How do you know that Sony Xperia phones use alkali-aluminosilicate glass ?

Guys, between 3G vs wifi.  Which one will eat up more battery?  Wonder If i should turn on wifi + data in office, since during lunch break I will need data.  Or i just turn off wifi all the way during office hours and use my data plan.  Which option will save more battery? So far from using the phone, the battery life not impressive, I have to charge it often.  The phone can only last long when I am not using it, leaving it on the desk.  When I am using it, I basically have to charge it every 6 hours as by then the battery will be around 30% or lower.  I mainly use the phone on whatsapp and coc, and when i play coc, the phone gets hot.

same here. try using merope as ur ringtone sound, its one of the ringtone sounds i think is loud enough.

raymondtong94 time to fark sony again? another user complain soft notification

SBH80 might be expensive but once you bought it, you will never change to other bluetooth headsets from other brands.

for SWR30, the price is quite hefty with a screen and some sensor improvements.
im not really into sports equipment but might come in handy for a while.
then get me a cup of coffee enough.  

talking about prolonging battery life... some said batteries needed exercises. that u discharge it flat n charge back to 100%.

I wonder what is best way to do so. what if I let discharge to 10% and charge to 100%.

flat discharge a battery is dangerous. u never know it can go dead. when u cannot on your set.

What is the best price can get for the Z3?