iMessage problem: friend has changed from Android to iPhone and I cannot message or text her now

Lisa_Singer wrote:

A friend recently got an iPhone; she had previously been using an Android phone. She has the same number but I can no longer message her. When I try, the colour of the text changes from blue to green as it does for non iPhone users and says it was sent as a text but she doesn't receive it.

I have deleted her contact information and re-entered it but it didn't work. I deleted all of our text threads and that didn't work. I would really love to be able to use iMessage to contact her; as of now, we are reduced to using Facebook Messenger and I hate it.

Any ideas how I can fix this issue would be greatly appreciated.

The issue is on her end, she needs to activate imessage, since you it turns green when you send it to her.