Answer:
Yes! You can try to Force start it or connect it to a computer that can diagnos your problem.
Step-by-step explanation:
Assuming you have a iphone Press the Off button and the down volume key for 20 seconds that should start the phone, Bring the phone up to your ear and try to hear if anything is happeneing. If that is a fail you can shoot me a email and ill send you a few apps that you can diagnoss your phone with.