Suspicious of cheating?

If you had very strong suspicions that your other half was cheating and you suspected there was actual proof on her/his phone would you go through it when they were not using it?
Updates
10 mo
I did. Once. And I glad I did because not only was she cheating big time but cheating with a drug dealer for free stuff. So yes I did and I'm feckin glad I did.
Suspicious of cheating?
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