Can this phone survive being dropped from a first floor window?

I was using my phone to as a tether and it was propped up against my bedroom window on the first floor. I forgot is was there and opened the window (dum I know) the phone fell out, slid down the roof and dropped on the concrete below. When I picked up the phone it seemed to be in tact with no damage, but when I tried to turn it on...nothing.

Phone will no longer turn on or off, merely flashes red when I push the on button. It doesn't even make a buzzing noise when I push the on button.The screen appears to glow (I only noticed this when the bedroom light was turned off) but apart from that nothing, not even fuzziness, nothing.

I left it on charge all night, no success. I removed the back cover and pressed the off button (inside the phone) several times. Again nothing. I have never had to fix anything like this before and don't have the first clue where to start. Can a phone survive a shock like this? Is it even mendable? I have a year left on my contract and the thought of having to pay £40 a month for a phone I can't use is horrifying. Please help! Any suggestions will be much appreciated :)