Dead of an Iphone

On my way from Italy back home my Iphone goes down. Nothing helps only the screen you see is what you get. On the cable and with an 100% charged battery the phone goes on and 2 seconds later is goes down. 
Reset, fully charge down, recharge, on the cable nothing helps. 
Making backup via Itunes not possible because only the sceen above appears for seconds and goes out.
So I ordered a new one but no Iphone. This time it is an ......... ? Friday night it will be delivered.