My strategy is to simply don't. If it's important, you can text or leave a voicemail.

One benefit of never picking up the phone is that I never get spam calls ever.

BTW, you can set a do not disturb schedule on your phone to automatically silence it. I even do location and consciousness-based routines for my phone. That way if I'm asleep or at work, my phone automatically silences itself, and then turns the ringer back on once I wake/leave work. Every modern phone has this capability.