Devil, are you going to enable the special power-saving mode? FYI. I did a similar test on a completely unmodified phone: - No 3G, At&t GSM only (does not hunt for 3G), no WIFI at all - logged in to gtalk, skpe via conversations - Nokia Messaging check every 30 mins from 8am to midnight - stock phone, nothing installed at all - no other apps running in 24hrs the battery had 28% left. Contrast to the same test(as similar as I could) on the E71 (Using Fring for gtalk+skype), 59 hours to get to 30% left.