Why would a man use privacy mode on their iphone?

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+1 y
We both have open phones and do not restrict each other from our phones but I recently noticed he is using privacy mode. Is he hiding something from me. What do people normally look up or do on privacy mode in safari.
Updates
+1 y
Our phones are open to each other so why my partner is using privacy mode is really confusing. What would he be hiding that he doesn't want me to see.
Why would a man use privacy mode on their iphone?
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