First of all, I'm getting programs crashes on 4.3 version. Should I pass it from my eyes or I need to do something about it ?
Secondly, I've bought case from aliexpress, and I'm afraid of back glass, becouse I've heard some news that some cases may cause back glass crack by itself.
I have ordered this one : http://www.aliexpress.com/item/Screw...942127195.html
After that, I wish to know, should I change Z to another phone? Becouse I'm reading a lot of comments in which people say that their phone screen cracks by itself. And I ain't want to happen this to me..
Also, I'm a little bit confused. I've read about anti-virus applications and other apps on official xperia forum and their recommending do not use those applications, so, which way should I use : stay on antivirus or not ?
Also, I have a little bit of pink on my liquid indicator. Is this is bad ? ( a little bit, not full pink). A corner near the flap of headphones are so brushed down, so I can see something like metal.. But It's still waterproof, 'cause I've tested it, but should I stay away from getting my phone in water or not?
And lastly, finally, the main question is, should I upgrade my phone from 4.3 to KK 4.4? I've readed some complaints about upgrade and got know that It may cause lag. So, what the decision should I make?
Thanks for answers.
Sorry for mistakes