Another way to turn on/off an iPhone?

My power button on my iPhone i broken. So I turn on my assistance touch. I've wanted to turn my phone but if i do, I can't turn it back on. Is there another way to open my phone?

Leave it as is it should automatically turn off after a while

Your phone will turn on when it's off if you plug it in. It doesn't have to be connected to the computer, just connected to power

You don't ever have to shut off iphones.