How do I force text message instead of iMessage?

In that case, you have the option of force sending the message as SMS by doing this:Tap and hold on the message being sent.From the options menu that shows, tap on Send as Text Message.Your iMessage will now be sent as a text message. (carrier charges may apply if you are not on a text plan) read more

When I chat with two of my friends (say A. and T.), our iPhones use text instead of iMessage. It used to work using iMessage, but one day, it switched to text. A, T and myself otherwise use iMessage with other contacts without any problem. read more

Send iMessage as regular Text Settings → Messages → Send as SMS Once set, this option will allow your iPhone to send an iMessage as a regular text (SMS) if there is no data service available. read more

"Send as text message" won't appear if the iMessage thread is with a recipient's email. If iMessage is no longer available, sms is not possible in this case. Start a new thread and make sure you're texting their number, not their email. You'll have "send as text" as an option again. read more