I bought new z1 yesterday. the seller said that the initial charge is 4 hours. after buying, i tried exploring my z1, afterwards i press the power button (tap only so that it will not shut down instead it will just on sleep mode) after 2 min i press the power button again but it does not oper, i press it for long time thinking it shutdown. and then after pressing it for long it opens. afterwards i press the power button again (tap only) and then it sleep, i press it again and it did not shut down. after a min or 2, i press the power button again and it did not open, it shutdown again. when i get home after charging it 4 hours prior to what the seller said, the problem did not happen again. is that normal since i did not charge it for 4 hours after purchase?
