The iPhone was perfectly working. Then it was left home for two weeks. Battery obviously drained out.
When I came back, I put the iPhone on the charger for a lot time. However, the iPhone and the charger were cold, like nothing is really charging. Charger works, have tested it with a different iPhone.
So now my iPhone still can't be turned on!
How can this be possible?
Edit: I tried hard reset combination, tried to connect to laptop, different chargers...