Can Cell Phones Ruin Relationships?

How many times have you been around your spouse and his/her phone rings or they recieve a text message and they dont want to answer the phone or respond to the message? Have you ever gone through your spouse's phone when you suspected cheating or have you caught your spouse cheating because of their cell phone? What are the rules in a relationship when it comes to their cell phone? Can a cell phone ruin a relationship?