The only real way, is to look at his device. I don't believe Verizon will turn over that information. Verizon does maintain text message content for a period of time, but fur them to release it, requires a court order I believe. You can use Family Base to see who he is texting, but not the actual text. You can call 611 or 800-922-0204, and ask Customer Service if it is possible.
Look at the phone. Verizon is not going to give you the content without a court order EACH time you want that content. If he is using Verizon Messages and you have the password for the MyVerizon account on his line you can look at the content from within that MyVerizon account.
It is just like everything else, if he knows you are watching and doesn't want you to know he will use a different method. You look at the text stream, he will switch to Hangouts, Skype, Facebook Messenger or some other messaging platform. There are MANY to choose from.
If you can't trust him with a phone, you should not give him one.
And don't forget about snapchat where the message is only viewable for a preset amount of time(set by the sender) after which the message would be automatically deleted from the receiver's device. The only way to save it would be to take a screenshot of it while still available.
Great question! You can use Family Base to monitor all of your child's usage. Check out the details here: http://vz.to/1dJRZEC.
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