IS HE CHEATING

So we have camaras in our apartment. The one in our bedroom is inside facing the parking spot and you can hear and even talk from it. I NEVER check that camera. But yesterday, something was telling me just to check them. Once i checked then i had noticed that some activity had been “manually removed”. Which was odd, so i asked my husband and he said that the camera had been messing up? which i did not believe. Tell me why i went through some of the activity and at some point i can HEAR MY HUSBAND ON THE PHONE WITH A WOMAN. I couldnt head clearly what was being said, but it’s for sure a woman’s voice. I got home. I confronted him and asked him who he was talking to. First he said it was the Tv. Bullshit, then he said he was on the phone with his guy friend. RED FLAG. His friend does not sound like a woman. I told him that if he wasnt hiding anything to let me go through his phone. I never asked that and i have NEVER EVER checked his phone. But if he was being honest, he could’ve easily said “Hey babe here you go check it.” instead he said “i’m not showing you shit” Sounds to me like he might be cheating right?? or he’s up to something.