my Sony XA2 isn't coming on, no display, not responding to chargers or PC's, soft restart isn't working, the phone was on 100% charge at the time its been just over 2 hours now and can't think of any reason it would do this, sometimes it does this but it comes back on after I press the power, anyone has any idea what's going on? I've had this phone for around a year and its second hand but was brand new with only a mild scuff. thank you