What is the library cell phone use policy?

Cell Phone Policy (library website)

Excerpts of the cell phone policy:

2.1. Cell phones must be set to vibrate upon entering the library.
2.2. Quiet conversations are allowed on Level 1 and Level 2 of the library.
2.3. Level 3 is a quiet floor. Any conversations, on cell phones or otherwise, should be limited to group study rooms.