iPhone 4S completely frozen and keeps turning off

I had my iPhone 4S for about two years now and it has frozen before, but this time it's completely out of whack.

Last night I turn off my phone to save battery. Today I turned it back on and it's completely frozen! Usually when my phone freezes I do a soft reset, but I did it and it STILL didn't work

I can't turn the phone on normally, I have to press the home key and wake up key to boot up. Then it gets stuck on the enter passcode screen, won't let me press anything and then turns itself off

I tried connecting it to iTunes and it said "iTunes cannot connect to this iPhone. The service did not start properly on the device".

I don't know what else to do, none of the common basic fixes seems to be working. Is there anything I'm not doing?

macmac13 said:

If you can, do a DFU restore. If you haven't backed up lately (which you should) you can try doing a hard reset (power and home for 10 seconds).

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The DFU restore worked thank you! Fortunately I backed up a few days ago so everything is basically back to normal