Can you see your wife's calls and text for free?

That will be very hard, no matter what you do. The only way you can listen to your wife's call is if she use the speaker from her cell. You might hear what she is saying but you can't never know what the other person is talking to your wife. Take my Words for it, it will be impossible. Before I discovered the man I married affair, once in a while I do ease drop when he is talking on the phone, but can't hear or know who he is talking to. All I knew was maybe he is talking to one of his student or even his friend from his work but never a woman...even when I heard him one time saying "I miss you!"