Nokia please release updates make battery Last longer! ...... With X3 firmware update solved issues.
1.update the phone to version v 5.65
2.let the battery drain till the phone goes off
3.charge the phone switched on for about 6 hours
4.do step 2 and step 3 one more time
5.from there and then charge it normally
RESULTS:
3-day hard use battery,4-day normal use battery,never goes off itself,no lag,almost top quality calls-reception-loudspeaker,really handy-stylish phone.
Need to Update Firmwares on C3-01 and 3710 Please so it has 4days Battery