How do I enable iMessage on my iPhone?

So are you having trouble sending or receiving texts and that’s why you think Messages are not enabled even though you say they are? Are you having trouble sending or receiving texts from your Android friends?

As KiltedTim points out you need to explain exactly what your issue is before there’s any hope of helping you.

What happens when you try?

What shows they are enabled?

What, EXACTLY, is the problem?

We are not psychic and we can not look over your shoulder.