Hello,
Here are some simple steps you can follow to unlock your Lumia 635 windows phone.
Switch off the phone > hold Volume Down > press Power > keep holding Volume Down until you see the exclamation (!) screen, then immediately release the Volume Down
Now tap Volume Up / Volume Down / Power / Volume Down
You may loose your data, but get your phone back. Sign into your Microsoft Account and restore your backup during the set up.
I had my LG in my pocket at the same time that I had my keys in there too. I laid down and you know the rest.

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