IPhone screen only works in some spots?

I want to put in my password but I can't put in all the numbers because the screen doesn't work in some spots.I've tried resetting it with the buttons, but that didn't work. If I try plugging my phone into my laptop with iTunes it says that it has an unknown error and it keeps connecting and disconnecting even if it's still plugged in. Can I remove the passcode part somehow so that I can get into my phone?

If you have ever dropped your phone, it may be cracked on the inside

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