IPhone froze on lockscreen, and my lock button doesn't work

I just picked my phone up to see it's frozen at the lockscreen, and my power button doesn't work. What do I do? My phone is also jailbroken, so warranty is already void. I was thinking I could pop my battery out, put it back in, then plug my phone in and hope it'll come on by itself, but I'm afraid if I do that it might require me to turn my phone on manually, which I can't do. Has anyone tried that? I at least hope it dies soon. It was at 38% about an hour and a half ago, and my screen is lit up. Just any advice anyone? I normally can figure these things out, but without a lock button it makes things impossible. Thank you!

Added (1). I figured it out! I took the back off my phone and up where your camera and flash is by there's a silver 'plate-like shield' covering some ribbon cables. I unscrewed the screws, lifted the plate off, and saw one of my ribbon cables had been undone! I simply pushed it back and my lock button works now, which means the rest of my phone works! Voila! Hope this helps anyone out there, and thank you Dale for your input! I appreciate it!

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