Incidentally, after a while when I finally really got sick & tired of the talking & texting to other people by my W (which included other men), I called the wireless provider and suspended the phone. The cellphones we have are both under my name (the account is in my name) and I had realized that I was enabling her to do these things and financing them at the same time, I felt so stupid that it took me that long to realize this. When I did end up suspending her phone so that it no longer worked she did get extremely mad at me ("how dare you?! why are you trying to control me?! etc.), I just replied in a calm fashion that me paying for a cell phone for her to use to speak & text other men was her controlling me, not the other way around. I told her she is free to get a cellphone of her own, buy one, lock in a plan and pay for it herself - that way I don't have to pay for a phone that isn't going to be used to call & text me.
We may not be able to stop our spouses from calling & texting potential affair partners because they can do whatever they want to do and it's in your best interests to promote their free will just remember to respect yourself enough to set a boundary that says "I'm not going to pay for you to be able to do this, you can pay for that yourself".
Hallelujah, and SHOUT IT FROM THE ROOFTOPS!!!
I'm continually amazed at the excuses LBSs use for not having the 'nad to cut off their spouse's cellphones.