How to change Sms to iMessage?
My phone automatically goes to SMS/MMS with some contacts, How can i keep them in iMessages?
iPhone 6s, iOS 11.4
Question marked as
Best reply
You cannot force it.
For a message to go out as an iMessage 3 things need to be true.
1. The recipient must have an iOS device or Mac.
2. The number the message is sent to needs to be registered with iMessage, and iMessage needs to be turned on on both ends.
3. Both sender and recipient need to have access to the internet, Wifi or Cell Data, as iMessages go through that to Apple Servers to be delivered.
If any of these are not true, the message defaults to SMS instead.
See here: If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support