My boyfriend didn't answer the phone, blacked me out with a message, said nothing, and asked me to send less messages recently. It's the fourth day. No contact. Is this a breakup?

This state should be ok, otherwise I will ignore you for a few days at most, and I won't hack your WeChat. Hacking you doesn't mean he doesn't want to contact you. But if a boy really doesn't want to be with you, at least make it clear so that he won't contact you. What's your name? This is irresponsible. Don't let such people exist.