Every smartphone owner's worst nightmare is trying to fire up your phone and finding that nothing happens. Your phone won't turn on. A black screen with no sign of life spells disaster. What are the reasons your Android phone or tablet might not turn on? Let's have a look at some causes and solutions. 1. Charging Issues As is frequently the case, the most obvious cause is usually the correct one. If you haven't noticed any sign of your phone malfunctioning previously, the problem might be a simple as a lack of juice in the battery. More often than not, that traces back to charging issues. Check Your Connections Firstly, check the obvious points. Did you definitely remember to charge your phone? Has the charger become partially dislodged from the wall socket? And is the power socket turned on? Dirt and Dust Next, ensure there's no dust, dirt, or other gunk clogging up either the USB port on your charging cable or your phone's charging port. Remember, the connecti...