Screen Not Working and Lock Button Stuck The screen has broken on my iPhone 4S and the On/Off button does not work. I had an idea that it might fix if I restart it (tell me if I'm wrong) but I can't. Is there a way that I can restart or even better update it from iTunes on the MacBook? I do know how to back it up.
Method 1: Reboot iPhone by setting "Bold Text"


Open the Settings app and head to “General”
Go to “Accessibility” and locate “Bold Text”, flip that to the ON position
An alert will show up saying “Applying this setting with restart your iPhone” – so tap on “Continue” to immediately soft reboot device


Method 2: Restart the iPhone By Resetting Networking Settings


Head to Settings app and go to “General” and then to “Reset”
Locate “Reset Network Settings” and select it, then tap to confirm and reboot your phone.


If the issue is still not solved you'd better to call Apple or have someone check for you. Or you can check hcqs.cc for replacement parts and repair it yourself.