Black screen Iphonexs

Please see this link for support If your iPhone, iPad or iPod touch won't turn on or is frozen – Apple Support

Did it work for you? It didn't for me. And I tried to contact Support and they offer either Call them or have them call you back or bring to Store. Obviously now we can't bring to the Store but if my phone can't start, how can I call out or people call me?

Man.