so I was letting my iPhone 6 charge like usually. The home button has been broken for a couple months now so I’ve been using assistive touch or what ever it’s called. Well yesterday I unplugged my phone and it turned off well I went to turn it back on and the apple logo came up but for like 2 secs then the screen got dark but was still on for about 15 secs then it shuts off if it’s plugged in it will stay on. And I can’t do a hard reboot with the home button and lock button because the home button is broken. I really need my phone back working I was gonna order a new home button ribbon cable because mine has a slight tear in it. If there is any solution to get it fixed fast plz help also I do not have a computer to use iTunes