Hello Tsilan,
I have the same problem.
I thank the autonomy of BV6000s will be much better than my old Xperia SP (2500ma) but it isn't; it is less! Even with a battery economy app (savee in my case).
Son I think when an asiatic factory give a technical data, you can divise it per 2...

I have a problem with installation the new firmware. I can't find the zip file on the phone. I go to : * about the phone * update * local updates And then the only choice I have is "SD Card". When I touch "SD Card", the following message appear :"No zip file in this director...