How do cops read texts online?

Okay I have an iPhone and my dad has been able to read my texts, ill be at my friends house and ill receive a random text from him about a text convo I had with someone earlier that day, for example: I was at my friends yesterday and I was texting a guy (who also has iMessage) about sneaking out at my friends house. Then I got a text from my dad saying, tell that guy you aren't sneaking out

My dad is private investorgater

I want know how he can read all my texts and even my kiks! Someone please help me

That is so ridiculous

Tell your Dad that I would like to know what app he is using. He is doing a great job

Sounds like your dad is using illegal methods to spy on you. You did not hire him nor does he have your permission to spy on you.

Certain phone carriers allow their customers to view their messages online, so that could be how he's seeing your messages.