I was on the bus just now. It was too noisy. How to say it in English?

I was on the bus just now. It was noisy on the bus, so I didn't hear my cell phone ring.

I thought it was going to rain, but it didn't.

The weather forecast said there would be a heavy rain, but we had a light rain.

When the meeting starts, set your mobile phone to silent mode or vibration mode.

I called you three times, but why didn't you call back?