Hi, this morning my Iphone 5s died, so I plugged it in as usual and it didn't seem to recognise that it was connected to a charger , it just comes up with the flashing battery symbol and the connect to a charger symbol. So I went out and bought a new cable and left it to charge for about two hours, it didn't work so I tried it in a different wall adapter and still nothing, I then tried the old cable in the other adapter same thing, i then tried both cables in my computer and still nothing. I've tried holding down the home button and lock button down for at least 15 seconds and still nothing. I've also tried blowing out any dust with compressed air in everything. I haven't updated my phone since I bought it about 5 months ago, I keep my Iphone in pristine condition and take very good care of it. So... any ideas on what could be the problem?