Reverse number lookup

I got a call but he missed it. It was a missed call. Fortunately, the number was on my phone when I pushed the button to retrieve the missed call. The number didn't have a name with it, which means that it wasn't the number of one of my contacts. I put the phone back in his pocket.

Why didn't I hear it ring?

My phone's on vibrate. Why didn't I feel the vibration?

Is my phone on vibrate or has it been silenced? I checked. And the phone logo with two lines on each side indicating motion let him know that his phone was on vibrate.

Why didn't I feel the phone?

I was walking to work and movement of my legs might have caused vibration enough to counter the vibration of the phone, or the movement with the motion makes sensory impossible.

I continued to walk, crossing streets heading down sidewalks through neighborhoods and across the bridge the whole time wondering who it was who might have called.

Could it have been an employer? Someone to tell me they wanted to interview me? Could it be someone to tell him he had been passed up for a job he had inquired about? That's possible but didn't they leave a message, or at least I hadn't felt another vibration, an indication that a
voicemail was left by the caller, but I hadn't felt the phone ring or rather vibrate in the first place, so not feeling the phone vibrate, which it does once indicating there's a message, was more likely that feeling the phone vibrate. I pulled my phone out of the pocket a second time
to check for the logo but he didn't see it. They didn't leave a message whoever the they was.