Depends on how dusty the phone, some will answer a text if thay say thay won't but have no work, others put light on and don't turn it off as thay are on there back all day and just forget to turn it off, never read too much in to these things as there are many reasons why, wot and why and all the girls have different attitudes to these things, so there is no regimented way to punt, it's often very hit and miss on many and most levels .