I unlocked mine, nothing much diff, using daily till now with Xperia SSpeed kernel v2 +KA10 Xperia SSpeed custom rom with blazing fast respond much more smoother than stock rom yo ~

=.= dont set min 1000mhz . . . . .
min 192mhz was used as alternate with sleep state to save you battery when you put your phone in idle lol . . . .

use Xperia SSpeed kernel v2 combo with KA10 Xperia SSpeed.
You'll see the different.

What happen to my battery ?
Once charged till 100% , it will drop to 80% even i still charging ?

wall outlet direct charged.
Dont think rom could do that harm =.=

for normal usage, battery is good , can withstand for 20hours+ with 3g/auto sync data/email exchange always on.

But when battery charged till 100% , it will drop to 80% , then only stay at that level . . . . .
happen everyday when overnight charging . . . .

you can see the hike there when charging, it always on wifi during charging time.
just than when it reach the peak , it will goes down till 80% . . . . .