Why are my messages green when I try to text my friend even though we are both in a wifi connection. Now my messages are only green. Hey used to be blue but now I got a new phone and it is messed up and I can't figure out why? Pls help?...

Well, it is nice that you have turned it on and off, but when you turn it on, you don't indicate if it activates. When you comment that you are in a Wi-Fi connection, are you not using cellular for iMessage? Are you going in and out of signal, and/or turning iMessage on and off to use it?

Have you tried removing the conversation from your Message app, and trying to send another message? If the other person sends you an iMessage, can you respond as an iMessage or does it go as an SMS? Can the other person send you an iMessage?

If you only use iMessage when at home because of data concerns, and you use SMS all other times, why even bother using iMessage. I'm confused by that, but then the whole premise behind iMessage was to provide an alternative to SMS. It seems it was more for users in the US that did not have good texting plans by had data plans. That has changed of late and now most users in the US have unlimited texting, but reduce their data plans, so they seem to want to use SMS more. The only advantage to iMessage then is for international usage. I would decide if iMessage even has an advantage and if not, don't bother activating it.

Think it is activated? All you have to do is go to Settings>Messages>iMessage and it will say if it is activated. Then you check your settings for send and receive and start conversation. Using it on a device you have cellular data turned off on and then moving in and out of Wi-Fi can cause issues since iMessage is only sometimes available.

It could be on her end, yes, since it seems to only be for the two of you. Again, is this person doing the same thing you are as far as using iMessage, in other words, being connected sometimes and sometimes not? You both probably need to delete your conversations with each other, and then do a reset on your devices and then start over again. Have the other person make sure their iMessage is showing it is activated too.

I suggest that you check to ensure that iMessage has been activated on your device first.