What Will You Do If You Find Your Partners Phone Laying On The Table?

What will you do if
you walk into the living room and find the Cell Phone of your partner laying on the table.

1. You will take the phone inside and keep until your partner returns and hand it over to him or her

                                                                   or

2. You will open the phone and read all the Messages and Check out all the Pictures

So what would you do? Well let's hear it from you and please give reasons for your answer