Nahhh, maybe when I was like 20 and had a more insecure girl, but I am past that. I expect who I'm dating to trust me unless I give 'em a reason not to. Same thing goes for me, I have no reason to check my girl's phone and if I ever felt compelled to than that's a bad sign. If she is checking your phone then that's more telling that she has thoughts of creeping behind your back.