3 month old new phone. samsung tocco lite. battery problem
1) faulty battery - you'd need to get a replacement from the manufacturer (should be free if still under warranty)
2) when you initially charged the battery after purchasing, if you used it at all before it was completely charged it won't hold a charge.
3) if you live or travel in mountain area, phones lose battery power quicker due to an increase in elevation and distance from nearest tower.
4) if phone has been exposed to moisture or direct sunlight for an extended amount of time, it can damage the phone's ability to hold a charge.
honestly, your best bet is to replace the battery & allow it to charge for 24 hours in "off mode". if the problem persists, then send it in to be repaired.