Hi, I've got a brand new Galaxy W i8150, and it's properly working. Occasionally, however, the battery does not charge. I have to open the phone, remove the battery, insert it again, close the phone. Afterwards, it charges again, as usual. This happens at unpredictable times, regardless of whether I connect the phone+battery to the laptop, or to the charger. Note: my battery is always > 80% charged. I've never discharged it more than that (and I wouldn't, unless required). Any hint? Thanks in advance. Giuseppe.