If battery life is a problem, I would've stopped owning smartphones 4-5 years ago. I have to be as smart as my smartphone, especially if you're a data intensive user like me. I've never had a problem with battery life because:

1) Everytime I find a charger I charge (as recommended by Sony-incerases battery life especially for the first few full charge cycles)
2) I have a car charger that I can plug into which is the first thing I do as soon as I get into my car.
3) I have my detachable USB charging cable plugged into my work computer all the time with a standby charging head plugged in at the power socket so I can USB charge it or detach the cable to use with the charger for quick charge.
4) I use my MW-600 bluetooth headset whic gives me freedom to talk & listen to music while the phone's charging or it would be really messy.

Battery problem solved, I NEVER complain about my battery life eventhough all my smartphones would probably last 1/2 day maximum with my user habits Current radio usage for all smartphones is really sinful that it's unpractical and unwise to expect 'good' battery life. Deal with it and be creative.

Btw, Xperia S has fast charging feature right? A 10-minute charge can get you 1 hour of talk time, and charging can reach to 80% in 30 minutes only before it starts to charge normally so I guess that's a start

This post has been edited by mode893: Mar 11 2012, 01:29 PM

Confirm http://www.geeky-gadgets.com/sony-xperia-s...led-02-02-2012/

You need to see how long it charges to 80% because this feature only activated till 80%, then it charges as normal

That's normal. Give it till 5-6 charge cycles for full performance. Make sure you discharge fully before charging fully per cycle