My son has a republic phone and I'm trying to find a way to monitor his texts without modifying anything on his phone because he's fairly tech savvy so he'd be able to remove it. I was thinking about a way to track the texts when they go over wifi. is there a possible way to do that?
SMS messages (aka "text messages") don't go over Wi-Fi, so it's not possible to track them that way. If you don't think you can install anything on the phone, the only way is through the carrier, and since intercepting other people's communications is against the law in most places, they're not likely to help you do that.